It's a British techno/technopop band called Hot Chip. A lot of the rest of their music is a little too techno for me, but something about this one sticks in my head. The video is, of course, very fun--rather like L'Arc's video last year with lots of amusing old fashioned and digital tricks. Another video from them for Over and Over rather turns the whole green screen thing on it's ear--my favorite bit being when paint is thrown on them changing the color of their clothes. (Sidenote: I like that they are "officially" posting their own videos--like Dolby they put up concert clips, commentary, etc.--if you can't beat it join it) Also like that evidently when they do the songs live they completely remix them. Oh, and I have no idea why the Joker/Two Face imagery.
I also can't get this song out of my head, by Kate Nash, also British, who just won Britain's best new artist at the NME's (like their Grammy's). When I first heard it I thought the refrain was good, but found her accent too much like watching a sketch by British Comedian Catherine Tate (she's the blond here), which I sometimes find trying. But it grew on me.
I still love the refrain, "My fingertips are holding onto the cracks in our foundation. And I know that I should let go, but I can't."
Part of Kate Nash's appeal and success is the fact that she basically made her album in her bedroom on her Mac. Played all or most of the instruments and then mixed it.
Sometimes melodies just sound so right to me--and obviously right to many people or these bands would not be successful. I've gone on about this before. I don't know what it is--intervals or patterns--that somehow just work perfectly to the ear (or at least the western ear, and perhaps now, the world).
Before ending this thought I'll put up one by Lilly Allen. I'm not that fond of Allen as I think her songs sound the same, but this video is hilarious (warning--obscene puppetry involved).