I actually thought season six was much better than season five. My all-time favorite from the season was Hal's Christmas Gift. I've talked about it quite a bit in December, but I thought it was an extremely well-done episode. And not just the Lois scene--the entire episode was laugh-out-loud for me.
Other great eps:
Buseys Run Away
Wow, that's a lengthy list, isn't it? For me, Ida Loses a Leg was good, but it didn't live up to its hype. And hype is a lot of it, I think. If you're expecting a "good" episode, then the episode needs to be a lot better than if you're expecting a drab ep.
Billboard needed an additional storyline for me, as it dragged on a bit too long, and Ms. Tri-County was an utter disappointment for a finale.
But overall, I thought it was a great season and am looking forward to season seven. The bit about Reese failing his senior year in Buseys Take a Hostage was aboslutely fantastic.