The Solid Rock Cafe in town can be groovy, outside the back of Central Station, there's also Rufus T. Firefly's which is sweet sometimes, that's also roundabouts in town. The DJs at the Cathouse generally suck, though I guess more if you go on a regular basis, as their playlist seems to be near identical week on week. But it terms of a rock venue to go to, it's usually the no-brainer option...