What do you get when you combine Forrest Gump style "travel the world, affect history" kind of storyline, add in a heap of dark adult humour and have the protagonist's main character trait to be that he likes to blow stuff up? In a word, this movie.
It's not as great as Forrest Gump. It's clearly imitating the latter, which is not a problem per se, but it causes us to draw comparisons. And while this film is a great deal of fun, the characters are not as nuanced and are there more for the sake of humour than story. It also doesn't have the depth and humanity, at least not to the same amount.
But let's not dwell on the Forrest Gump similarity too much. Because this film does have strength to stand on its own. It's a hilarious film about an old grump that one day simply decides that retirement home doesn't suit him. And thus he jumps out of the window and goes wandering like, as we find out through numerous flashbacks, he has always done when life gets too boring. Along the way he meets all sorts of people, including an elephant in Sweden, and hijinks ensue, like they often do in these kinds of movies.
This movie shines because of its unpredictability and fast pace. You never know what's coming next and the movie keeps up relentless pace, not letting you dwell on the unlikeness of the things happening on screen, which serves the film's purposes very well. The characters and their actors are also very charismatic and fun to follow around. Sure they're a bit stereotypical, aside from the main character, but that doesn't really bother you as you're watching them go because the events they're in are so bizarre.
The 100-Year-Old Man Who Climbed Out the Window and Disappeared has one of the most cumbersome titles in a while, but trust me when I say that the film is anything but. If you're looking for a comedy with a dark sense of humour, this is not a bad choice.