Whats a band similar to bob omb from scott pilgrim vs the world?

Beck did quite a bit of the soundtrack and wrote most of the fun rock/garage sounding songs. So you could start there and see if some of his other music suits you. I'd also suggest trying out some of the White Stripes, especially they're earlier albums. To me, Black Rebel Motorcycle Club also has a similar unrefined fuzzy sound. Maybe try the Black keys as well. Hope this helps some!