Couple things to say:
1) This is the kind of music I live for. I love 80s music, but this is basically like the music we would have if that particular style had continued to evolve through the past 20 years.
2) I don't listen to a lot of music (well, I *hear* music, but I rarely just sit around and listen to it, it's always while doing something else), so even though I know I'm a fan of the genre, my knowledge of it remains frighteningly shallow.
That's where this thread comes in and I thank you all for contributing, because I've found a lot of stuff that I never knew was out there.
I don't have much to contribute really, but of course there is Electric Six. They're more a fusion of different styles, but a lot of their songs have the whole "dance-rock" thing going for em that I tend to find appealing. If you haven't checked them out, or only know them for Gay Bar, I'd urge you to look deeper.
Edit: Von Iva is pretty good, too:
http://www.youtube.com/watch?v=FwYEuYP_sjY (Their music and Zooey Deschanel single-handedly saved this piece of crap movie for me).
Edit 2: I'm not sure how anyone can NOT, on some level, like La Roux.