I watched Waking Life at an impressionable, and very stoner-philosopher, part of my life and it really helped to expand my perspective on things, and was fairly relentless in its profundity.
The bands mewithoutYou and Brand New, for gems such as "what use is one glove without the other?" and just generally showing me that it's ok to be angry!
I'm wishing I had written down the profound moments as they happened as I know I've experienced it more than a few times.