The show has some very funny moments. I believe my favorite part when Charlie finds his brother's money (whom always claims he forgot his wallet) and pays the pizza man $100 tip and tells him to keep the change. Rose is like the cutest, nicest stalker you'll ever know. She would even buy wigs and dress up to pretend to be someone else to the point Charlie thought he was always imagining Rose.
Dim-witted but incredibly fun. The plot doesn't change much, but that's one of the joys of a good sitcom. Cons: Many will dismiss it based on the premise, but should remember that a comedy does not have to be high-brow to be funny.