On DaeRave's recommendation, I picked up the Aliens and Predator box sets at Elfsar this past weekend. Although I haven't played them on the board yet, so far I am very impressed:
* 7 figures in each box set, each very highly detailed, sculpted and painted. Even if I never use the figures, they will make sweet desk decorations
* Sweet map in each box also! (If you're tired of playing the same HeroClix map over and over)
* The figures ARE compatible with HeroClix! Ignore the colors and just refer to the character card to know what they do!
* Figure numbers are very solid; at least comparable to the Batman Alpha set.
* Also like Batman Alpha, the point values are round numbers, so you can have easily have a 200, 300, 400 or 500 pt team of all-Aliens or all-Predators (or even mix & match: do Predators keep Aliens as pets?)
Isn't there a Freddy vs. Jason set also? Leatherface? Now I have to check it out! Who hasn't wondered how Spider-Man would fare against the bastard son of a thousand maniacs?!