I'd say Ash - Meltdown (one of the best hard rock/power pop albums of the last few months IMHO). Also another vote for Dandy Warhols - Welcome to the Monkey House (they get better and better with each album), and Muse - Absolution if you don't mind indulging in some art-rock pretention (and who doesn't!). I've heard the new Hives is pretty good, but I still have to snag it myself.