Before he was FBI crime fighter, Aaron Hotchner,
on CRIMINAL MINDS,
Thomas Gibson was Greg Montgomery on "Dharma and Greg."
Pictured above with his co-star, Jenna Elfman,
the couple revised their roles briefly last night on the
season premier of "Two and a Half Men"
Not quite the happy couple they were for five years on the series, the were still hilarious in their guest appearance.