Two dozen job applications later, someone's interested! YEEEHAAA!!!

I'm interviewing at Family Video, a local video store, on Wednesday, and I'm in a bit of a conundrum that I could use a bit of help with. I'm divided as to whether or not to wear a tie. I'm wearing nice jeans and a black, longsleeved button up shirt with a small blue and silver stripe pattern (I'd wear either my white or black dress shirt, but my mom says I should wear something with a little more color). I don't know if I should wear a tie though. It's not an office or desk job that I'm applying for - the other employees wear khaki pants and slightly dressy shirts while working, so it's not REAL formal.

My dad says a tie would make me look like I'd put in the extra effort to look good. My mom says it'd make me look kind of geeky and a little pretensious (spelled wrong, I know), considering I'm just interviewing at a video rental store. I agree with both of them. Any suggestions?

Thanks in advance,

Adrian