Alan Colmes, left, and Sean Hannity
For 12 years, the politically opposed commentators shared hosting duties at Fox News without once coming to fisticuffs on their primetime debate show. Perhaps that was because Colmes seemed content to play low-key liberal straight man to Hannity's conservative dramatics. But in November, Fox announced the liberal half would be leaving Hannity & Colmes — the network's second-highest rated program — at the end of the year. Colmes, 58, said he wanted to "develop new and challenging ways to contribute to the growth of the network." He'll continue as a liberal commentator on Fox, and he'll also begin developing a weekend program for the network. No word yet on whether Hannity, 46, will replace his partner or fly solo.