“Napoleon Dynamite” is one of those movies that people either really love or really hate. I've known people to walk out in the middle of it because they just couldn't stand it for another minute. I've also known people to laugh almost continuously from start to finish, and I myself was one of those people. The movie has a devoted cult following, although unfortunately many of them are hipsters, who like to wear “Pedro for President” T-shirts more as an in-joke than a statement of solidarity.
If you knew anybody like Napoleon Dynamite in high school, or if you were one of the outcasts yourself, you'll be cheering for Pedro's unlikely campaign against popular girl Summer Wheatley. Napoleon's bizarre personality and shockingly thorough lack of social skills provide the main source of humor, along with the equally odd antics of Internet-dating nerd Kip and creepy Uncle Rico.
The scene where Kip and Napoleon visit a local martial arts studio to listen to a pitch for “Rex Kwan Do” is a spot-on parody of the American McDojo, but that fact will probably be lost on most viewers without martial arts experience.
What makes this movie special is that there is genuinely nothing else like it. Normally, a person's previous likes provide an accurate way to assess whether they will like a particular movie or not, but Napoleon Dynamite is notorious for making havoc of this rule. Some people love it and some people hate it- and there's no predicting who.