I kept alternating between thinking it was hilarious or just mean. If he's just being 'artsy' then its hilarious, but if the guy stopped taking his meds it's sad. Regardless, that was 10 L O N G minutes. It was good to see Letterman hasn't lost 'it' and can still do Late Nite Dave when he wants to.
At the end Joaquin seems to 'get' the jokes, and seems ok with them, which makes me think he's just being artsy otherwise I wouldn't have posted it.