Adele announced Tuesday that the video for her second single from "21" will debut Thursday at 7:56 PM ET on MTV and Vevo.com.  The video is likely to thrust "Someone Like You" back into the top slot on Billboard's Hot 100 singles chart, just like her performance of the song on the VMAs did last month.  The single is currently sitting at No. 2, behind Maroon 5's "Moves Like Jagger" featuring Christina Aguilera.  "21", the singer's second album, has spent 30 weeks on the Billboard 200 albums chart, including 12 nonconsecutive weeks at the top.  Since its January release, the album has sold more than 3.5 million copies in the US alone.  Check out Adele's VMA performance of the single in the video clip below.