Infestation is a watchable movie. Let me begin with that because I have a lot of criticism for this movie, but most is constructive. This is a movie that with a few different touches really could have been the next Shaun of the Dead. Walking the tight rope between horror and comedy is tough because it's easy to lose both crowds. Some people don't find bugs funny and others aren't scared when the mood lightens too drastically.
The thing that this movie does best is separate the horror from the comedy moments without seeming choppy or displaced. You can be knee deep in a bug attack one second and be laughing the next. And it feels natural. Chris Marquette really brings this movie together. His quirky, lame attitude attributes to most of the comedy but believe-ability that the horror can be serious.
The major flaw of the movie is that many of the supporting roles are played well, but no one else really pops. If someone else could've helped carry the comedy load it would've really helped. Not to mention that the attempt at being sincere at the end is acted poorly. However, having Ray Wise in this movie was a big success.
I truly felt that if another funny character existed and the script was spruced up a bit, this movie could have become the cult classic it was meant to. The fact that it even accomplished what it did, given the difficult genre mix, is proof enough that they were close to greatness.
I would recommend this movie to everyone that likes HorComs or for those who don't like horror movies and need some levity to get through them.