Most people will probably have to look some of these up on iTunes or w/e, but if you want to get in touch with your psychedelic side, i suggest:

Sun Cycle- Blue Cheer
Liar, Liar- The Castaways
Strange Brew- Cream
A Girl Called Sandoz- The Animals
See Emily Play- Pink Floyd
Rainy Day- Mushroom Pillow
Octopus- Syd Barrett