Try Spun, it is pretty confusing even when you are watching it sober, or try Disney's Alice in wonderland. But I also must say, I would rather do something else than watching TV while tripping, like dancing and smoking joints!!
Minority Report is insaaaaaane while tripping. Favorite trip movie of all time. Even beats dark side of the rainbow.
movies and tv are completely different when tripping. movies, it has to be a really amazing movie or i'm like "ehhhh let's go on an adventure instead". tv is fun because you can flip through such a wide variety of things, and whatever it is it's bound to change. and it can be like in shaun of the dead when it all matches up and it's talking to you . i want to watch seinfeld tripping. really bad. lots and lots of it.