The funniest part for me was the scene where they’re trying to shoot the Dealbreakers promo, including the HD bit. They could have possibly thought of a better image for Jack, but it was still funny.
Frank turing into Liz was pretty funny as well.
I find it interesting that they seem to tease showing us a show, but never actually do it. I’m OK with that as 30 Rock is a workplace comedy that’s about a TV show. Actually showing TGS or Dealbreakers really isn’t actually necessary.