nonesuch explorer has released some excellent gamelan stuff (among a whole lot of other awesome stuff i'm sure, but so far i've only listened to some of their balinese music releases)
thee are several different styles of gamelan. this one has an older type of gamelan (i'd have to google for what it's called) and it's really great. my favourite from what i've heard
this one is also great and has not only gamelan, but also kecak, the balinese "monkey chant":
