Suggestions by @rowenjackson

Alan Tudyk

as Robots in I, Looney

Tommy Lee Jones

as Agent K in I, Looney

Chi McBride

as John in I, Looney

Steve Martin

as Boss in I, Looney

Tom Hanks

as Carl in I, Looney

Bruce Greenwood

as Robertson in I, Looney

Shia LaBeouf

as Farber in I, Looney

Devon Bostick

as Rodrick in I, Looney

Kelly Sheridan

as Starlight Glimmer in I, Looney

Joe Alaskey

as Daffy Duck in I, Looney

Joe Alaskey

as Bugs Bunny in I, Looney

Robin Williams

as Thedore in I, Looney

Sam Rockwell

as Zaphod Beeblerox in I, Looney

Ryan Lee

as Champ in I, Looney

Mick Wingert

as Slappy in I, Looney

Jack Black

as RL Stine in I, Looney

Bridget Moynahan

as Calvin in I, Looney

Will Smith

as Spooner in I, Looney

Walt Disney Pictures

as Composer in Disney's Space Jam

Christopher Lloyd

as Rasputin in Disney's Space Jam