Celebrity·Posted on Feb 6, 2014Jay Leno Made A Cameo In Lady Gaga's "Alejandro" VideoHe's had a number of performances, apparently.by Emily HennenBuzzFeed StaffLinkFacebookPinterestTwitterMail Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF Watch the whole video here! View this video on YouTube The Late Show with Jay Leno / youtube.com