In case you were wondering about the Fred Simmons appearance last night on Conan O’Brien, here are some clues to unlock the mystery for you. First, the video.

If the YouTube clip doesn’t work, you also can watch the segment and the full episode online via NBC, and by doing so, you’re supporting the writers. Did you know that? Now you know.

Fred Simmons, aka Danny McBride, aka Danny R. McBride, is the star of the movie, The Foot Fist Way (you saw the film’s Web address displayed in the Conan clip), which debuted at the 2006 Los Angeles Film Festival, and gets a limited release nationally this April 11. Here was the Variety review from 2006. McBride also has roles in three other 2008 film comedies, Drillbit Taylor, Pineapple Express (those two both penned by McBride’s friend in dumb comedy, Seth Rogen) and Tropic Thunder.

Interesting to see Conan welcoming a character comedian sketch onto a show that already had Will Ferrell performing a sketch, made even more interesting as the camera cuts to Conan and Will during McBride’s bit to gauge their reactions.

Related: Fred Simmons on MySpace.