This past week Vince had a poll question up on the site. It was asking what was your favorite Elvis documentary. That's The Way It Is, Elvis On Tour, or This Is Elvis. TTWII took elven votes, while the other two took three votes each.
My vote went to TTWII, but that's probably just because I have seen it more recently. This was a hard question for me. Elvis On Tour might be my favorite, really I don't think I can pick a favorite.