Aphex Twin, particularly the albums Selected Ambient Works 85-93, Selected Ambient Works vol. 2, and I Care Because You Do.
Also, Flying Lotus' Los Angeles, Can's Tago Mago, and pretty much anything from Pink Floyd that they made between Meddle and Animals, including those two. The Wall is too dark and disturbing for psychedelics.
As far as movies go, I don't really like watching movies or TV when I trip, but on the comedown I typically watch some type of TV comedy, like South Park, Robot Chicken, or something like that. The only time I ever enjoyed a whole movie on psychedelics was when I dropped a tab of acid and a xanax bar simultaneously and watched the original Total Recall with Shwarznegger. I watched the movie right after dropping, and at the end of the movie I was beginning to feel effects, and during the peak, I was in an intense k-hole-like dissociation where I was basically in the movie. Finally becoming lucid enough to perceive reality was weird as fuck.
This is gonna be merged into the existing "Music & Drugs" thread.