In what is likely to be remembered as the first YouTube presidential campaign, perhaps the most talked about video has been singer Will.i.am's celebrity-dotted homage to the "Yes We Can" mantra of Barack Obama. The video features split-screen images of several prominent celebrities, past and present, singing alongside clips of Obama's victory speech in South Carolina. For those listening closely and with an ear for Hebrew, it's one of the lesser known, albeit just as eye-catching, performers who stands out: Israeli-born actress Maya Rubin. Twice in the video, Rubin can be heard saying "kein anu yecholim" - Hebrew for "Yes...