I just wanted to put in my $0.02 about Hike Along Video. I just got my $24.95 "Entire Trail" DVDs last night and skipped around watching the Trail Crest, Windows, and summit chapters.
I spent a lot of money last year preparing for my trip with buying maps, gear, and books. This DVD was, by far, the best money I've spent educating myself on the trail. Pete does an EXCELLENT job recording exact distances, time, and elevation along the entire trail. I can't recommend these DVDs enough! You really, honestly, feel like you're on the trail!
http://www.hikealongvideo.com/WhitneyA.html Great job, Pete!