http://en.wikipedia.org/wiki/List_of_Seinfeld_episodes#Season_8_.281996.E2.80.9397.29
Larry David left Season 8 and 9, though he still did the voice of George Steinbrenner.
Still some funny episodes though:
"The Frogger"
"The Dealership"
"The Merv Griffin Show"
"The Butter Shave"
"The Voice"
"The Little Jerry"
The episodes were still funny, though they were a lot stupider in comparison to the episodes written by Larry David. You can actually tell by watching Seinfeld which episodes were written by Larry David and which ones weren't lol.
From wiki for Seasons 8 & 9: "The show no longer contained extracts of Jerry performing stand-up comedy (Jerry had no time or energy for this with his new roles), and storylines occasionally delved into fantasy and broad humor."