The British actor appeared in character to the seductive strains of "Careless Whisper" on David Letterman's "Late Show" Thursday night to present the Top 10 reasons to see his movie.
Although the jokes are fairly predictable, Baron's delivery and Letterman's uncomfortable laughter make for a funny spot.
Check it out:
We kind of like No. 2. How about you?
Follow Zap2it on Twitter for the latest TV, movie and celebrity news updates.