The music video for Ch-Check It Out is available here:
http://boss.streamos.com/download/capi001/beastieboys/ch-checkitout/video/chcheckitout_v700.mov
Also, they'll be on MTV and the Late Show with David Letterman tonight - don't miss them!
(TV showing info stolen from Gothamist: http://www.gothamist.com/archives/2004/06/15/beastie_boys_at_53rd_and_broadway_today_5pm.php - actually, I lied, I got the Letterman showing off of them, but I found out about the MTV showing thanks to their website.)