Two And A Half Men and The Big Bang Theory, two popular sitcoms created by Chuck Lorre, do not share the same universe. Although they have the same creator and some cast members, it has been established that The Big Bang Theory is a show within the world of Two And A Half Men. The shows have made references to each other, but they exist in separate continuities. While The Big Bang Theory has a spin-off called Young Sheldon, it is unlikely that Two And A Half Men will be revived due to the messy departure of Charlie Sheen.