I received this first cryptic, seemingly high-budget "teaser" clip a little over a month ago, and didn't hear any more about it until yesterday, when the sender posted up another clip with pretty impressive production values, prompting much speculation/debate on Twitter. Popular guesses so far include The Knife (probably not), Goldfrapp (definitely maybe), MGMT (who cares), Lady Gaga (weak), and Christina Aguilera (whoa). Admittedly, we're playing right into their PR campaign by posting this, but we're intrigued (unless it's Lady Gaga). Anyway, take part in the viral scheme of 2k10 by leaving your guesses in the comments.
update: commenter Carlyle offers up these two links, which seem to implicate Goldfrapp's Head First.
update II: fake twitter acct. @iamamiwhoami claims they are none of the above, but we're still pretty certain it's Goldfrapp
update III: Goldfrapp's Head First album art