If you're looking for something fun to watch that isn't too spastic, and you find he likes Excel Saga or Love Hina or other slightly silly 'situational' series, try Azumanga Daioh, that one is always fun, but not off the wall.
Otherwise, maybe Appleseed (since he liked Beebop and Champloo) for a more serious recommendation or Akazukin Cha Cha for a little sillier, or even Pani Poni Dash! for something completely off the wall - this is gonna be more spastic that Excel Saga, though so if Excel Saga is a no go, this is almost definitely a "nein!".
Pani Poni Dash! is only recommended for those with a strong constitution, though, cause, boy, does it get strange.

Oh, oh! And for a good couple of movies that I have found a bunch of people to like, Tokyo Godfathers (which is a more 'real life' story) or Paprika. Paprika is quite a bit psychologically strange, though, so if he didn't like things like Paranoia Agent, then this is not for him.