A band to look out for: CSS. They combine the goodness of Yeah Yeah Yeahs with the fun of Helen Love, but from Brazil. They'd be one of the "internet phenomenon" things if their name wasn't an acronym for a stylesheet language used to described a page's presentation in HTML (meaning you risk being launched into geekland if you Google them). It actually stands for Cansei De Ser Sexy, Portuguese for "I'm tired of being sexy". Much better.
If you want an iTunes taster, the standout track from their self-titled album is Music Is My Hot Hot Sex. Much like Madonna's Music, except cool and young.