Alrighty, so if I was running the WWE right now, these are the DVDs I'd get started on.
Kurt Angle: It's True, It's Damn True
Booker T: Can You Dig It? or Booker T: You Did Not Just See That!
Kane: Insane. Pain. Kane or Kane: The Fire Within'
Edge & Christian: Awesomeness Unleashed or Edge & Christian: Reeking of Awesomeness
The Dudley Boyz: 3D
Cruiserweights: 220lbs ways to please your lover

The History of the Manager
WWE SmackDown: Holla Holla
WWE RAW: Greatest Moments
WWE's Greatest Gimmicks
WWE: Climbing the Ladder
WWE: Bloodflow
And some others
I'd also like to see a documentary about the under card to mid-card of the WWE. Wrestlers like William Regal, Paul London & Rene Dupree are key in mind here. WWE: To the Top would be a good anem here. I'd also like to see one about OVW.