I'm actually disappointed that the Gossip Girl's aren't going to be on. I thought the story they were going to use was awesome. 30 Rock does an amazing job with their guest stars. They fit right in with the flow of the show. And like Prateek said, if it helps the ratings and draws new viewers in, why not?

30 Rock has had an eclectic group of guest stars and they've managed to use them in a variety of well written situations without coming off as gimmicky. The show hasn't been doing awesome in the reasons, and they've gotten a bunch of critical acclaim. I was a little hesitant that NBC might pull the plug. Arrested Development was the same way, critical acclaim, but still cancelled. Either way, I want the show to be on for as long as it can and if we need to add one flash in the pan folks to help increase ratings then so be it. Tina has even joked she wanted Britney Spears to show up as a way to boost ratings for 30 rock the way it helped How I met your mother. Honestly, if Britney can follow the direction and commit to whatever is written I wouldn't mind seeing it.