Not all "metal", but:
Tool, A perfect Circle, Dream Theater are also very trippy at times.
Although I would agree with Lichen that it does "sound intense". I prefer more downtempo music when I'm on psychedelics, and generally something that sounds a bit more happy.
Weed and metal, though, is a great combo. I'm a big fan of stoner metal, drone and doom metal. I like it slow and heavy
"If you have any answers, We will be glad to provide full and detailed questions."
[url=http://shimeon.tumblr.com//url]