I'm putting these two films together because they cover similar material, and you might get a lot out of watching them both (or either one, really). The subject is the transformative power of meditation and how it works even for hardened, angry criminals who are locked up. It's so effective it's startling. Afterwards these guys hug and are much more peaceful and present.
I'm hoping to do a Vipassana course myself someday- it's a ten day, silent meditation retreat, and there is no fee (but you get lodging and delicious Indian food).