Check out my little brother on the vibraphone!
(1) 'Midnight star' really shows off the subtlety of the instrument -- it's quite magical-sounding in places:
(2) 'Rhumbata' by Chick Corea and Gary Burton is fun and jazzy. (I especially like the sections from about 5:30 - 7:30 or so.)
(He's also got a new marimba piece up here, but it's hard to beat Attendance to Ritual!)