Following in the footsteps of thelana here are some clips of Wentworth as Gage Petronzi on Buffy The Vampire Slayer. (The audio gets a little out of sync, but other than that it's pretty good)
Opening Scene, Wentworth in a turtleneck sweater: http://s17.yousendit.com/d.aspx?id=305NXE6U33UYU0CEP4XDS9ZJFQ
Wentworth and Alyson Hannigan: http://s17.yousendit.com/d.aspx?id=1D452H5N4HPI72C1PT4Q7HVUSG
Hope you enjoy them! Now if only I can get the one of him turning into a fish monster.