This month's Wire has a great 'Primer' on Psychedelic British Folk from the 1960s-70s. All wonderful stuff, of course, but anyone with a desire to cup their left ear and add some thoughts, further recommendations to this most unfairly maligned of genres would be nice. And please abandon the urge to post youtube clips of Mulligan and O'Hare, just this once.
Anyway, to get us all in the pagan mood, here's some prime Incredible String Band:
http://youtube.com/watch?v=XOyiDIUhbAE
Still not convinced? How about this clip from the best British film ever made?
http://youtube.com/watch?v=42zkSLC0I2o