Harry Potter is the easy answer but I'm sure it has to do with licensing issues.

Another one that I think would sell quite well is a Disney themed machine, like the video game Kingdom Hearts. It would encompass battling various evil villains from Disney movies. It would have a very large fan base and would appeal to women, which is very important when trying to convince a wife or G/F that dropping thousands of dollars is a good idea. Of course a straight up Nightmare Before Christmas machine would be beyond awesome as well.

What about a Bruce Lee themed pinball machine? The man is a legend throughout the world and beloved by young and old here. It could be just like one of his movies. You battle your way through lower level bosses until you fight Chuck Norris at the end. That would be beyond epic!!