Following on from his latest movie, Indiana Jones and the Kingdom of the Crystal Skull (which I saw but alas, didn't enjoy) here's a caricature of Harrison Ford.
A pretty hard guy to caricature. The trick I found was to make sure the photo reference really looked like Harrison Ford. A lot of his photos, he just doesn't look himself!
Here's another one of Harrison, this time a quick sketch from the movie, 'The Widowmaker'.