I've never been a big fan of Laugh Track Sitcoms. Most of them annoy the shit out of me. I would say Friends is about one of the worst things to ever grace the TV set.
I do have a soft spot for That 70's Show, Cheers, Roseanne, Fresh Prince (grew up on it) and News Radio. Golden Girls was always something my mother had on as well that I have fond memories of.
I never liked Seinfeld. Sorry, I just found the characters more annoying then funny.