Adam Horovitz is such a sincere guy, there doesn't seem to be many successful musicians who have stayed (or ever were) as honest! the Beastie Boys are amazing, but behind them are 3 crazy creative guys who actually care about, not only what they are doing, but the world around them.
Here is his acceptance speech from the 1999 MTV awards:
http://www.youtube.com/watch?v=icYCTiyuhSs
and here is him on "Back to School" (part 1):
http://www.youtube.com/watch?v=TILWgN_JOm0&playnext=1&list=PL0B500DFA2A7B0C72