^ Yeah, I watched some Living Single as a result of this thread, was curious if there was anything to the accusations of stealing. After 5-6 of episodes from most seasons, my impressions are that Living Single is more of a classic sitcom. It's got more cornball, cheesy humor. It feels a little more templated, like you can predict both where the overall plots will go, but also where individual gags are going--like you're being led down well-trod joke structures you've already walked. Feels similar to Fresh Prince and Wings in that regard. This isn't a bad thing. On top of that, Living Single has some genuinely funny lines every once in a while, and I'd literally LOL at these while I had it running in the background.
Friends, on the other hand, has more absurd / surreal humor, a more playful nature, more wordplay. It's more clever. The acting is better. The timing is better. The cinematography is better. It feels newer. Where Living Single feels like a show with potential struggling under the shackles of The Old Ways, Friends feels like a show where the studio gave the showrunners much more freedom to try new things and find a unique, quirky voice. So while might Friends have taken some inspiration from Living Single early on, and the studio heads at NBC might have been jealous of Living Single initially, once some of the surface similarities were copied, the shows went into different directions. Friends is a very different show from Living Single, in the end.