Rivers Cuomo
Himself

Patrick Wilson
Himself

Brian Bell
Himself

Matt Sharp
Himself / Party Goer in "Undone" (voice)

Mikey Welsh
Himself

Scott Shriner
Himself

Mykel Allen
Herself / Party Goer in "Undone" (voice)

Al Molinaro
Al Delvecchio ("Buddy Holly")

Henry Winkler
Fonzie ("Buddy Holly") (archive footage)

Tom Bosley
Howard Cunningham ("Buddy Holly") (voice) (archive footage)

Marion Ross
Marion Cunningham ("Buddy Holly") (archive footage)

Mary Lynn Rajskub
Pizza Delivery Girl ("The Good Life")

Tony Gracia
Groom ("Island in The Sun")

Steve Whitmire
Kermit the Frog / Statler ("Keep Fishin")

Eric Jacobson
Animal / Fozzie Bear / Miss Piggy ("Keep Fishin")

Dave Goelz
Gonzo / Waldorf ("Keep Fishin")

Bill Barretta
Pepe the King Prawn / The Swedish Chef ("Keep Fishin")