I see a thread about The Floyd and I'm hooked. Here's some stuff for ya, Edwin:
Obscured by Clouds
Ummagumma
A Saucerful of Secrets
The Piper at the Gates of Dawn
Tonight Let's All Make Love in London
Zabriskie Point
More
If you can find it, there's a import cd (if you're American, that is) called Anthology I. It contains the first recordings as The Pink Floyd Sound from 1965, with Bob Close as the second guitarist. Also, check out some barrett solo stuff. It's an acquired taste, but who knows? You may like it.