No. 1: Where Carly Rae Jepsen's "Call Me Maybe" is on the Billboard Hot 100 chart, knocking Gotye's "Somebody That I Used to Know" from the spot he held for weeks. Jepsen's catchy tuned has been No. 1 on iTunes for the past few weeks, but hadn't yet been able to top the Billboard chart. Adele's "21" is back on top of the album charts this weekend, outsing John Mayer's "Born and Raised."