Seinfeld - Man With Cape (uncredited) - The Chinese Woman (1994)
Seinfeld - Newspaper stand worker (uncredited appearance) - The Gum (1995)- Larry David makes an uncredited cameo as a guy who sells George a pack of gum“
Seinfeld - Man on Beach (uncredited) - The Marine Biologist (1994) He sad “Is there a Marine Biologist here?”
Seinfeld - Screaming B-movie actor - The Heart Attack (1991) He sad "LIKE FLAMING GLOBES...FLAMING GLOBES!!!!!"
Seinfeld - Man on Raft (uncredited) - The Pilot (2) (1993)
http://www.kennykramer.com/observerld3.html Pictures of Larry David From The Pilot and The Gum
Check This Site For His Other Voice Cameo’s: http://www.tvtome.com/tvtome/servlet/PersonDetail/personid-8236
P.S Was Larry Seen or just heard in the following 2 episodes?
Seinfeld - Prison Heckler - The Finale (1) (199
Seinfeld - MC of comedy club - The Fire (1994)