I took the plunge and decided to see what the Porcupine Tree was about. I like Signify. First listen was with headphones and very nice. Will probably like In Absentia after a few listens. I also ripped the bonus audio tracks from the DVD Life Aquatic with Steve Zissou to CD. These are 10 covers of David Bowie songs sung solo w/ guitar in Portuguese by Seu Jorge. Kind of humorous and oddly pleasant.

Porcupine Tree: Signify, In Absentia
Seu Jorge sings David Bowie
Tom Waits: Big Time, Blue Valentine
Liquid Soul: Here's the Deal, Liquid Soul
Bill Evans: Complete Village Vanguard Recordings
Air: Moon Safari
Ani DiFranco: Little Plastic Castle