is there a comprehensive list of PJ members (past and present) side projects and cameos on other artists' albums? (if so, MEEEERGE!!) i came to think of it while reading an old Guitar World magazine in which there's an interview with Geddy Lee of Rush talking about his solo record My Favourite Headache. apparently Matt Cameron is holding the drumming duties on this and it was completely news to me.

so feel free to add anything you're aware of and i'll edit the opening post accordingly

Eddie Vedder
Solo releases:
Eddie Vedder/I Am Sam OST/"You've Got to Hide Your Love Away" (2002)
Eddie Vedder/Dead Man Walking - Legacy Edition/"Dead Man" (2006)
Eddie Vedder/A Brokedown Melody/"Goodbye" (2006)
Eddie Vedder/Into The Wild (2007)
Eddie Vedder/Eat Pray Love/"Better Days"(2010)
Eddie Vedder/Ukulele Songs (2011)

Side projects:
Eddie Vedder with Mike McCready & G. E. Smith/30th Anniversary Concert Celebration/"Masters of War" (live) (1993)
Eddie Vedder with Nusrat Fateh Ali Khan/Dead Man Walking The Score/"The Face of Love" & "The Long Road" (1996)
Eddie Vedder with Hovercraft/Kerouac - kicks joy darkness/"Hymn" (1997)
Eddie Vedder with Mike McCready/Tibetan Freedom Concert/"Yellow Ledbetter" (live) (1997)
Eddie Vedder with Susan Sarandon/Cradle Will Rock OST/"Croon Spoon" (1999)
The Supersuckers with Eddie Vedder/Free the West Memphis Three/"Poor Girl" (2000)
Eddie Vedder and Mike McCready with Neil Young/America: A Tribute to Heroes/"The Long Road" (live) (2001)
Eddie Vedder and Zeke/We're a Happy Family - A Tribute to Ramones/"I Believe in Miracles", "Daytime Dilemma (Dangers of Love)" (2003)
Red Whyte with Eddie Vedder/The 5th Symphony Document: Soundtrack/ "Lucky Country" (2004)
Eddie Vedder and the Walmer High School Choir/The Molo Sessions/"Long Road", "Love Boat Captain", and "Better Man" (2005)
Eddie Vedder with The Strokes & Josh Homme/You Only Live Once single/"Mercy Mercy Me (The Ecology)" (2006)
Eddie Vedder & The Million Dollar Bashers/I'm Not There OST/"All Along the Watchtower" (2007)
Eddie Vedder with Ben Harper/Body of War: Songs that Inspired an Iraq War Veteran/"No More" (live) (2008)

Guest appearances:
Temple of the Dog/Temple of the Dog/"Hunger Strike", "Pushin Forward Back", "Your Saviour", and "Four Walled World" (1991)
Bad Religion/Recipe for Hate/"American Jesus" & "Watch It Die" (1993)
Mike Watt/Ball-Hog or Tug-Boat?/"Against the 70s" & "Big Train" (1995)
Neil Young/Mirrorball/"Peace and Love" (1995)
Fastbacks/New Mansions in Sound/"Girl's Eyes" (1996)
Gary Heffern/Painful Days/"Passin' Thru" (1996)
Crowded House/Recurring Dream/"Everything is Good For You" (1996)
The Ramones/We're Outta Here!/"Any Way You Want It"
Pete Townshend/A Benefit For Maryville Academy/"Magic Bus" (live) & "Heart to Hang Onto" (live) (1999)
Wellwater Conspiracy/The Scroll and Its Combinations/"Felicity's Surprise" (2001)
Neil Finn/7 Worlds Collide/"Take a Walk" (live), "Stuff and Nonsense" (live), "I See Red" (live) and "Parting Ways" (live) (2002)
Cat Power/You Are Free/"Good Woman" and "Evolution" (2003)
Pete Townshend/Magic Bus - Live from Chicago/"Magic Bus" (live) and "Heart to Hang Onto" (live) (2004)
Jack Irons/Attention Dimension/"Shine on You Crazy Diamond" (2004)
Crowded House/Seattle, WA 09/01/2007/"World Where You Live" and "Something So Strong" (2007)
John Doe/The Golden State/"The Golden State Remix" (with Corin Tucker) (2008)
Crowded House/Surf Aid - The Music/"World Where You Live" (2008)
Ron Wood/I Feel Like Playing/"Lucky Man" (2010)
REM/Collapse Into Now/"It Happened Today" (2011)

Stone Gossard
Pre-Pearl Jam:
Green River/Come On Down (1985)
Green River/Deep Six/"10,000 Things" and "Your Own Best Friend" (1986)
Green River/Dry As A Bone (1987)
Green River/Motor City Madness/"Searchin' (Good Things Come)" (1988)
Green River/Rehab Doll (1988)
Green River/Sub Pop 200/"Searchin' (Good Things Come)" (1988)
Green River/This House is Not a Motel/"Swallow My Pride" (1989)
Green River/Sub Pop Rock City/"Hangin' Tree" (1989)
Green River/Another Pyrrhic Victory: The Only Compilation of Dead Seattle God Bands/"Bazaar" and "Away In Manger" (1989)
Mother Love Bone/Shine (1989)
Green River/Endangered Species/"Ain't Nothing to Do" (1990)
Green River/Dry As a Bone/Rehab Doll (1990)
Mother Love Bone/Apple (1990)
Temple Of the Dog/Temple Of the Dog (1991)
Green River/Afternoon Delight: Love Songs from Sub Pop/"Baby Takes" (1992)
Mother Love Bone/Singles: Original Motion Picture Soundtrack/"Chloe Dancer/Crown of Thorns" (1992)
Mother Love Bone/Mother Love Bone (1992)
Mother Love Bone/Thrash and Burn: The Metal Alternative/"Capricorn Sister" (1993)
Mother Love Bone/The Best of Grunge Rock/"Stardog Champion" (1993)
Green River/Hype!: The Motion Picture Soundtrack/"Swallow My Pride" (1987 demo) (1996)
Mother Love Bone/Proud to Be Loud/"Bone China" (1997)
Green River/Wild and Wooly: The Northwest Rock Collection/"This Town" (2000)
Green River/Sleepless in Seattle: The Birth of Grunge/"Come on Down" (2006)

Solo releases:
Stone Gossard/Bayleaf (2001)

Side projects:
Brad/Shame (1993)
Brad/Threesome: Music from the Motion Picture/"Buttercup" (1994)
Brad/Interiors (1997)
Brad/Chicago Cab: Soundtrack/"Secret Girl" (1998)
Brad/Welcome to Discovery Park (2002)
Brad/Brad vs Satchel/All except "Looking Forward", "Peace and Quiet", "Takin' It Back", and "Who's Side Are You On?" (2005)
Brad/Best Friends? (2010)

Guest appearances:
Neil Young/Mirrorball (1995)
Thermadore/Monkey on Rico/Four songs, including "Pushing" and "Anton" (1996)
Three Fish/Three Fish/"Strangers in My Head" (1996)
Ty Willman, Kevin Guess, and R. Cole Peterson III Esq./Calm Down Juanita/"Touchin' Myself" (1999)
Josh Freese/The Notorious One Man Orgy/"Men & Women" (2000)
Mike McCready, Stone Gossard, Cole Peterson, and Chris Friel/Live from Nowhere Near You/"Powerless" (2003)
Steve Turner/Searching for Melody/? (2004)
Critters Buggin/Stampede/"Toad Garden" (2004)
Jack Irons/Attention Dimension/"Water Song" (2004)
Steve Turner/And His Bad Ideas/? (2004)
Meganut/That Would Be Dope/"Satisfaction" and "Rockbottom" (2005)
Josh Freese/Since 1972/"Who Am I to Say, Really?" (2009)


Mike McCready
Pre-Pearl Jam
Shadow (1979-1988)/ no recordings
Temple Of the Dog/Temple Of the Dog (1991)

Solo releases:

Side projects:
Mad Season/Above (1995)
Mad Season/Working Class Hero/"I Don't Wanna Be a Soldier" (1995)
Mad Season/Bite Back/"River of Deciept" (1996)
Rockfords/Down to You Soundtrack/"Silver Lining" (2000)
Rockfords/The Rockfords (2000)
Rockfords/Live Seattle, WA 12/13/03 (2003)
Flight to Mars (2003-2011)/no recordings
Rockfords/Waiting... (2004)

Guest appearances:

Jeff Ament
Solo releases:

Side projects:

Guest appearances:

Dave Krusen
Solo releases:

Side projects:

Guest appearances:

Matt Chamberlin
Solo releases:

Side projects:

Guest appearances:

Dave Abbruzzese
Solo releases:

Side projects:

Guest appearances:

Jack Irons
Solo releases:

Side projects:

Guest appearances:

Matt Cameron
Pre-Pearl Jam
Kiss Imitation/no recordings (1976)
Skin Yard/Deep Six (1986)
Skin Yard/Skin Yard (1987)
Soundgarden/Ultramega OK (1988)
Soundgarden/Louder Than Love (1989)
Temple of the Dog (1990)
Soundgarden/Badmotorfinger (1991)
Hater/Hater (1993)
Soundgarden/Superunknown (1994)
Hater/Hempilation, Convicted (1995)
Wellwater Conspiracy/Succour, Far Side of Your Moon (1995)
Soundgarden/Down on the Upside (1996)
Wellwater Conspiracy/Declaration of Conformity (1997)

Solo releases:
Foo Cameron - Attack of the Killer Tomatoes Soundtrack (1978)

Side projects:
Wellwater Conspiracy/Brotherhood of Electric (1999)
Wellwater Conspiracy/The Scroll and Its Combinations (2001)
Skin Yard/Start at the Top (2001)
Wellwater Conspiracy/Wellwater Conspiracy (2003)
Hater/The 2nd (2005)
Harrybu McCage/Harrybu McCage (2008)

Guest appearances:
M.A.C.C./Stone Free (1993)
Eleven/Thunk (1995)
Seaweed/Spanaway (1995)
Kristen Barry/Home Alive
The Prodigy/Fat of the Land (1997)
Matt Cameron and Taz Bently/Flyin' Traps: Stereo Drums (1997)
Stegosaurus/Stegosaurus (1998)
The Smashing Pumpkins/Adore (1998)
Amy Denio/Greatest Hits (1999)
Chris Cornell/Euphoria Morning (1999)
Tommy Iommi/Iommi (2000)
Geddy Lee/My Favourite Headache (2000)
Our Lady Peace/Spiritual Machines (2001)
The Smashing Pumpkins/Judas O (2001)
The Walkabouts/Ended Up a Stranger (2002)
Aya/Senjou no Hana (2002)
Chad Kroeger featuring Josey Scott/Spider-Man Soundtrack (2002)
Burden Brothers/Queen O' Spades (2002)
Peter Frampton/Fingerprings (2006)
The Bergevin Brothers/Seven Songs for America and One for the World (2008)

I'll just edit Matt's in for you. All I did was transcribe it from Wikipedia.

i added this thread to the index