Stupid if you don't watch it high.
You can never go wrong watching Cheech And Chong while you are high, and this in my opinion is there best one.
This isn't for everyone, but it is still a great film. Lots of things to see, with some visual images, and a very good story line. Great movie to watch while high, but you have to focus, and not be caught side tracked by something else.
If you want to learn, that's right, learn, watch this. Entertaining while you aren't high, even more entertaining while you are. It has lots of information, you learn plenty of things. I've watched it at least 10 times, and it hasn't bored me once. You can say that this is the truth about pot, and by the end of the movie, it has you laughing about the whole situation in general.