Conan O’Brien has finally announced his post-Tonight Show plans: he has signed a deal to host his own show on the cable network TBS. His new show, airing Mondays through Thursdays at 11 p.m., will begin in November; the show currently occupying that slot on TBS, George Lopez’s “Lopez Tonight,” will move to 12 midnight. The announcement comes as a surprise, since most of the rumours about O’Brien’s future centred around Fox, and he was said to be in talks with the network. But basic cable has once again triumphed, and O’Brien can look forward to a proud future of following Tyler Perry shows and Seinfeld reruns.