"The Fourth Kind" is actually a pretty decent alien picture. It combines supposed "real" footage with dramatizations starring Milla Jovovich. The "real" footage was where the scary things happened. I feel like the film would have been better without these dramatizations. I don't really like how it cut back and forth between the two.
Even though the dramatization is not as scary, Milla Jovovich does give a great performance. She really is a terrific actress.
There are some very scary scenes, but what makes it scary is you don't know exactly what is going on. Whenever an encounter occurs, the camera is affected. You can barely make out the images shown, but it is enough to really scare you.
Yes, a few things didn't make sense. Yes, some characters are not so good like the loud non-believing sheriff or the ultra-ugly little boy, but overall "The Fourth Kind" does what it sets out to do. It scares an audience.
B I recommend it.