Blueberry (Renegade) that the OP mentioned is the best tripping movie I've seen, and the most accurate. Visually it's a totally amazing movie but the plot is kind of lame. Also, most of what they attribute to the Chiricahua Indians actually comes from the Navaho. The Chiricahua do not do peyote, and even if they did, the trips they show in the movie look more like ayahuasca than peyote. Anyway... if you can forgive some of the inaccuracies, it's fun to watch.
Mind you, I usually can't watch movies at all while I'm tripping. My attention span is too low and I feel trapped. I need to be able to move and explore other things. Also... it would be kind of stupid to watch a movie about tripping while you're tripping. I'd rather watch a tripping movie while I'm sober, so I can actually experience a trip in its fully intensity. Staring into a monitor would hurt my eyes, and darkness by candle light reveals so much more of the subtle energies while you are tripping.