Scott is a bass player and plays a sweet Sunburst Rickenbacker bass (I own a tuxedo Rickenbacker bass from the 70s), so in the first 5 minutes of the movie I was already liking what I was seeing. And then the music hit: I love the music in this movie. There is a good mix of tunes and some that were written for the bands in the movie to play. The music has a mostly retro, overdriven feel to it. I believe Beck had a hand in writing some of the original music used in the movie. Other songs in the movie are from groups such as: Metric, The Bluetones, Black Lips, and T. Rex.
The special effects throughout the movie are fun--there are often overlays like when someone is introduced it typically shows their name, age, and what they do next to them. When a phone or bell rings it shows a ringing sound like: r-r-r-r-r-r-r-ring. When music is played sonic waves shoot forth and during fights there are some thuds and whacks reminiscent of the old 60s Batman television program. None of the effects detract or become distracting--they add to the film's charm.
So, if you're into music, video games, action, and comedy, give this movie a chance.