This season was the best for a couple of reasons, but the main one was the storyline involving Angie Bolen. In my opinion, she is one of the best single season characters of any show I think I've ever watched. I like the time jump where everyone is older, and this is the first one after the time jump that wasn't ALL about Mike/Susan. Angie's "it's in the detonator" line is probably the biggest queen moment of the show and having her blow Patrick to bits is the best thing ever. Season 8 rivals 6 I think, but 6 beats it out in the end. (S1 is also very good)
List:
Day 1: Favorite Male Character - MJ Delfino
Day 2: Favorite Female Character - Bree Van De Kamp
Day 3: Least Favorite Character - Orson Hodge
Day 4: Favorite Season - Season 6