During its nine-year network run, Seinfeld, which premiered in 1990 on NBC, set the meandering course for four single friends living in New York. The group's core is Jerry (Jerry Seinfeld), a stand up comedian whose professional path includes a shot of creating a network sitcom, a guest spot on the "Today" show, and a wealth of other quests gone-awry with a personal life rife with an endless parade of never-quite-right girlfriends. His childhood best friend, George Costanza (Jason Alexander), could be deemed the quintessential loser; he can never hold a job or keep a romance.. although he has more than enough schemes to make either happen. Jerry's ex, Elaine Benes (Julia Loius-Dreyfus) offers the quirky quartet her own barrage of bad dates and worrisome workplace sagas. The curiously-coiffed Kramer (Michael Richards) rounds up the group as Jerry's over-the-top imaginative and often-mysterious neighbor, who has no visible means of support and an uncanny knack for opening doors to opportunities he has no business being near.