YUS! Battlestar Galactica Online just started its open beta testing this morning. It is a F2P browser game, so no need to download/install anything (assuming you have a working version of Flash or Java…not sure which one they use). You can play as either a Colonial or a Cylon, your characters are customizable and the game, in my opinion, is very well done (especially for still being in beta).
Check it out, if you have time to waste!