It's difficult to add to the excellent reviews by Amazon and the other contributors, as they've summed it up so well!
The 1989 Batman movie had the Joker - and was very good. The follow up "Batman Returns" had the Penguin and Catwoman, and was pretty good too. The next one "Batman Forever" had the Riddler, but it wasn't up to much. And let's forget about the awful "Batman and Robin" one! This 1966 movie, however, has all these characters and has more entertainment value than all the more recent offerings put together.
Kids will love this movie, as will adults with an ironic sense of humour. There are so many laughs to be had, the characters are larger than life and it is quite evident that the actors are really enjoying it. With a few nods to the camera by Adam West as Batman, what we have here is the movie equivalent of a stage pantomime.
For me, the one scene that stands out is about an hour into the movie where Batman tries to dispose of a bomb. It's got to be one of the funniest scenes in cinematic history! But there are some wonderful throwaway gags that explain how Batman miraculously gets out of a sticky situation.
If you have a DVD player, this is a must-have DVD. There is a worthwhile commentary by Adam West and Burt Ward (Batman and Robin), stills galleries (some of the photos of the Riddler with a "circular saw - conveyabelt torture trap" appear to be from the TV series) and an interesting documentary. The presentation throughout is superb too. Absolutely flawless.
My only wish now is for the 120 episodes of the 1966-68 TV series to be released too! Maybe then we will finally get to see that conveyabelt of the Riddler in action!