Don't you think that Chelsea just sucks? When I first started to like this show it was precisely the womanising, the loose attitude and great life style of Charlie Parker that compelled me. But to see him whipped by his lady, and crying over her stiff panties after he has spent weeks making up excuses so she won't be mad makes him look even more pathetic that Alan.
Warner Brothers and CBS excecutives were worried about the extremely low ratings achieved by last season. If they ever wondered what could've caused it, I think the answer is as easy as: "Chelsea". Once this controlling, anal retentive woman started being a main part of the show, it just stopped being funny. I mean, Alan was enough already. The series just could not handle another insufferable little bitch who whines all the time, especially if she has such a great power over Charlie's actions.
So, summarising: as long as Chelsea is on the show, we won't be experiencing whatever made this series funny.