When Latin pop star Shakira tweeted Oxford University group Out of the Blue, “Hey @ootboxford, we LOVE your a capella [sic] Shak medley,” and linked to the video, well the retweets and favorites followed as well as views in the millions on YouTube. The all-male a cappella student choir from the esteemed English university — decked out in suits and ties (sometimes shirts unbuttoned) and amusingly imitating her dance moves — recorded the video to “Hips Don't Lie” and posted it in late July. Proceeds from the sale of the song go to the Helen & Douglas House Children’s Hospice. Check it out here. — KB.