Inferior to the first offering but still a moderately entertaining SOV flick while its on. The deaths aren't as funny (though I doubt anything could top the originals iconic hospital scene), the aliens don't seem to do as much in general, and there are too many dragged-out scenes where we are shown a whole bunch of nothing. But just when you think the movie's about to derail into complete boredom, it always redeems itself with a nice alien shot, some amusing acting and dialogue, or some other entertaining stupidity.
The pint-sized aliens essentially have sticks for appendages, and their hands are stubs, yet somehow they are still able to twist doorknobs and drag a full-grown man across the floor. As with the first movie, the growling sound does start to get a bit grating after the 100th time it's used.
All the SOV staples are still there: horrible acting, horrible dialogue, horrible CGI, horrible gore, paper mache creature FX and random flatulence. The entertainment is also still there, it's just not on the level of the first. So, in short, decent but disappointing.