It probably should be accepted....but if someone knows Yev Kassem (which was only used once - in the finale), certainly you know he's the soup Nazi. To paraphrase the Quizmaster, common sense is required for all featured quizzes.
After trying Ellen, I correctly guessed Will & Grace, but saying's it's Will & Grace, semantically, simply because of using plural is a little misleading. I didn't watch Ellen, was there anyone else gay in the main character lineup?
If I remember correctly (and I'm not saying I am) Ellen came out during the run of the show but not actively lived as gay (just announced she was). Will and Grace had gay characters that lived as gay characters and dated. It might be splitting hairs but saying it and being it is the difference between being openly gay.
I guess it's a question of whether you consider Ellen to be playing a character rather than just being herself? That being said, I also tried Ellen first
http://seinfeld.wikia.com/wiki/Yev_Kassem