well, as you can tell from my avatar, i dig can.
hard to describe them, they were WAY ahead of their time. i only know 1 album but it would probably be their most famous, and finest, Tago Mago.
those who are into earlier works of pink floyd, the mars volta, experimental wackiness or prog rock in general will love this. Tago Mago is quite amazing for it's time (1971), can't believe people had the creativity like this back then.
check out the songs "Paperhouse" and "Mushroom".