This must be another one of them uber underrated movies because I haven't heard much about it at all.
This movie is friggin' hilarious. I watched it about 2 months ago for the first time and it seems that me and my roommate have ordered it On Demand about every weekend for those two months. Me, being the genius that I am, realized that was getting expensive so I finally went out and bought it. If you haven't seen this just give it a chance and you'll be happy.
The basics are that it's about a 35 year old video game tester that has to move in with his grandma. And that's about it. The rest is just nonsensical hilarity.