These are the kind of episodes that shaped Two and a Half Men. These are the kind of episodes that enabled this show to become the #1 comedy on television and to make Charlie Harper a television legend.
The episode did not feature one of the better Alan performances, but Charlie was able to steal the show here getting women who would normally hate him to get on his side. He should be the quintessential villain but due to the strong writing on the show he is somehow the good guy. The Office has a similar vibe with Jim, where Dwight should be the one people sympathize with, not Halpert.