I'm in the middle of season 2 and it's getting exhausting when the show focuses solely on Sam&Diane. There's so many great characters that were essentially fully formed from the jump and they're all pushed aside. Diane gets Sam tickets to a Hagler fight, then picks a fight with him about their relationship. It's just you need to let things go once and while.
Although, I have to say, Shelley Long is a great actor. Her playing Diane drunk was seriously funny. I was wondering if her calling Sam "Yes, sir," was written or her choice.
The show has some great quick sight gags though, and the actors' reaction shots are just hilarious.