I watched one of my favorite episodes of Futurama this morning, Where No Fan Has Gone Before. If you couldn't guess by the name it's a parody/homage to Star Trek. Specifically the Original Series. They managed to get William Shatner, Deforest Kelly, Leonard Nimoy, Walter Koenig and George Takei. James Doohan wasn't willing to do the show. This episode is just a blast. My favorite episode is Roswell That Ends Well.
Edit: I was mistaken on DeForest Kelley being in the episodes. McCoy was there, but never spoke. DeForest passed away in 1999.
Edit: I was mistaken on DeForest Kelley being in the episodes. McCoy was there, but never spoke. DeForest passed away in 1999.