Justin Timberlake appeared as part of a Panasonic event at CES in 2012, but the real news surrounding him was that he had become an investor in Myspace, with plans to return it to relevance.
The revamped social network, which is currently still in private beta, has a new look and a big emphasis on music discovery. It's far from perfect, but seems to be more promising than anything Myspace has been attached to in a long, long time.