I hate obvious geek-pandering too, but this movie was a lot more subtle with the references than I thought it would be. I felt like this was Micheal Cera's best movie and the writing was really good. The fight scenes are really awesome, and a lot of the music is written by Beck and some indie bands, so if thats your thing its really good. Also, it was directed by the same person that directed Shaun of the Dead and Hot Fuzz.
Basically, I think its worth a shot even if you don't instantly give it two thumbs up for mentioning Zelda.