The Bovine is a great place to grab a drink or see a show. They used to have awesome bands playing every week and post-show, people would stick around because they'd play awesome music and there would always be cute boys around :)
The decor is basically...scrap metal yard? Chunks of metal fences and car parts are stuck to the outside and inside, all along the ceiling and behind the bar. If you want to zone out with drinks, there are TVs with something entertainingly strange playing most of the time, and they have lots of cheap booze options to keep people interested.
The patio out back is great in the summer, and the crowd is usually a lot of fun. If you've ever been into the punk/metal/rockabilly crowd, this is a great place to hang out, although with the birth of Tattoo Rock Parlour across the street, the crowd has changed quite a bit. Still a good place to drink, though.