^This, Live At Pompeii is very psychedelic, "Careful With That Axe, Eugene" is ideal for peaking on LSD. The Wall film is the same way, a music video for the whole album, trippiest parts, in my opinion, are "Empty Spaces/What Shall We Do Now?", "Comfortably Numb" and "Another Brick In The Wall, Part II" The music video for "Welcome To The Machine" also scares the shit out of me.
I've always thought of Yellow Submarine and Magical Mystery Tour as really long music videos as well, Yellow Submarine is amazing on pretty much anything.
More traditional music videos:
Soundgarden - Black Hole Sun
Smashing Pumpkins - Tonight, Tonight
The White Stripes - Fell In Love With a Girl
Red Hot Chili Peppers - Californication
Red Hot Chili Peppers - The Zephyr Song
Queens of The Stone Age - Feel Good Hit of The Summer
Queens of The Stone Age - Go With The Flow
Radiohead - No Surprises
Radiohead - Fake Plastic Trees
Radiohead - Paranoid Android
many, many more