...you don't know what you're missing! It's totally off-beat and hill-ar-ious!! It came out a couple years ago so you should be able to rent it at Blockbuster or order it on Comcast's On Demand. Whatever you have to do, get to it.
You may ask why the random chatter about a 2-year old movie. Well, I bring it up because I had a dream last night about this weird puffy princess-like dress (maybe I was at a wedding, I can't remember). The dress had "puffy sleeves" just like in the movie. You have to see it to know what I'm talking about!
I found this tribute to Napoleon Dynamite on Youtube: Napoleon's Top 10. So, if you've seen the movie, sit back and enjoy the little recap. And if you haven't seen it, lean forward and take all the goofiness in, and then go make a run to Blockbuster.
* Update 6/5/08: Hey, I found this Napoleon Dynamite Soundboard the other day. Have some fun with this one...