With the season coming to a close, the networks are starting to look toward next season. In the case of 'Criminal Minds,' that includes exploring the possibility of a spin-off series. They ran an embedded pilot for it earlier this season, introducing the new cast, and they've already had tremendous success with both 'NCIS' and 'CSI' spin-offs. But whatever happened to the old-school way of creating spin-offs?

'Frasier' was a long-time cast member on 'Cheers' before he headed off to Seattle and sitcom super-stardom. 'The Jeffersons' spent time living next to the Bunkers ('All in the Family') before moving on up. Even as recently as 'Friends,' they spun series co-star 'Joey' off into his own series -- maybe that's when it all went so wrong.