Note: Following the events of Charlie Sheen's departure from Two and a Half Men, CBS ordered an additional two episodes for Rules of Engagement’s fifth season, bringing the total number of episodes to 26 from the initial 24 ordered.
The aftermath of Charlie Sheen's departure from Two and a Half Men prompted CBS to order additional episodes for Rules of Engagement’s fifth season, ultimately resulting in a total of 26 episodes, rather than the original 24 planned.