At least this brownie explains Walden's behavior. It's not baked with the usual ingrdients.
Added:
Berta goes on vacation, forcing Charlie to get a replacement on Two and a Half Men.
Added:
Berta sits down to talk with television producer Marty Pepper (Carl Reiner).
Added:
Charlie and Berta sit down on the couch to watch some television and relax while Alan cooks.
Added:
Evelyn and Berta talk to legendary television producer Marty Pepper (guest star Carl Reiner).
Added:
When Chelsea and Alan, the best of friends, are busy cooking dinner, Charlie and Berta analyze the situation over some beers outside.
Added:
When Chelsea moves in, Berta informs Charlie that she now works for Chelsea and he can direct his requests through her.
Added:
Charlie helps catch Berta up on all the events that happened the the previous day... such as Rose and Alan going on a double date with him and Chelsea. Wait... what?
Added:

Two and a Half Men Quotes

Charlie: Oh, try MalibuPuddingGirls.com.
Alan: Pudding Girls?
Charlie: Trust me.
Alan: Oh ... ew.

Yeah, hi. I'm watching your commercial cash for gold and you just showed a woman selling her wedding ring for $500. No, I don't want to sell gold, I want to meet her. She's hot and we know her marriage isn't working out.

Charlie