Homo Erectus is a dumb movie that uses intelligence as its punch line. Its takes place during the stone age and centres around the character of Ishbo who is the only intelligent person amongst his tribe. He's determine to advance mankind with useful inventions such as the toothbrush, utensils... and pants. Of course he is seen as an outcast and his life is miserable. It's very funny stuff and is exactly what the movie Year One should have been. Sure, it's a one joke movie but it maintains its hilarity. Adam Rifkin directs and stars in this movie and it's a flick you will either "get" or you won't. I was previously introduced to his brand of humour with Detroit Rock City and if you enjoyed that then you'll probably get a kick out of this. It's a no-brainer with brains and a brilliant end scene!