2000 Miles to Maine: decent movie, some drug use so dont show your young kids

Walking with Freedom: Lion King seems like a very nice guy, I just don't care for his movie making style. can't recommend this one

Appalachian Impressions: Mark Flagler production. former thruhiker. good film for an introduction to the AT, very basic info

TREK: My personal favorite, good insights into the minds of thru hikers,

as in all things, YMMV, just my 2 cents