^ The problems with the TV series on DVD are legendary. Partly because different organizations control the rights to the characters, vs. the actual TV show itself, and so on. There's also the problem of the cameo appearances - remember the bits where Batman & Robin would be scaling a wall, and out of a window would pop characters like Colonel Klink, the Green Hornet, Lurch, etc.? All of those characters have their own rights and the actors (or their estates) would need compensation. And so on and so on. 
