Since he likes Pink Floyd/Bob Marley, I think he'd like Easy Star All Stars'
Dub Side of the Moon. DSotM done in reggae/dub style. You could do that w/ Led Zep/Marley, too, and get one of Dread Zeppelin's CDs.
How about a Dag Nasty disc- mainly
Field Day- that's old school melodic punk. Hard rock? Hmmm. Seems like he likes the atmospheric stuff. How about Porcupine Tree's
In Absentia? It's prog-rock, and should fit in w/ the Pink Floyd/Zep/Tool vein. He may like Tantric's first disc, too.
Love & Rockets would be along the lines of Peter Murphy. They have a best-of collection that would be nice. Or
Express.
Man, I could go on all day. Maybe you should ask someone in here to make a comp for you to give him.
I think you'd be better off posting this in the other forum. They'd have a field day with it.
fp