What kind of bonus features are on the second disc?  I do remember, and have somewhere, that little bit they did for MTV with Stiller and RDJ (in the Iron Man mask) beating the crap out of Jack Black).  On the one-disc, which I have, it's just two commentaries (though RDJ brilliantly does his as Lincoln Osiris... you know that's something they couldn't get away with in Cloud Atlas because that movie cuts around too fast).

I had totally forgotten about that awesome kid who runs the heroin camp, he's so angry and nuts... and just one of the most unexpected bad guys I can remember.  And you feel a little sympathy for him because he's a kid but not too much because he's f'ing pyschotic).  It's one of those weird but brilliant casting moves that the movie makes that you don't see coming but makes the movie so much better (Tom Cruise is another example, I remember when that came out and people were trying to figure out who he was for that first minute when he was on screen).

I had also forgotten about Matthew Mac as Stiller's agent and Jason Bateman's cameo at the end