Seinfeld was a comedian .
Set predominantly in an apartment building in Manhattan 's Upper West Side in New York City , the show features a handful of Jerry 's friends and acquaintances , particularly best friend George Costanza -LRB- Jason Alexander -RRB- , former girlfriend Elaine Benes -LRB- Julia Louis-Dreyfus -RRB- , and neighbor across the hall Cosmo Kramer -LRB- Michael Richards -RRB- .
Seinfeld