Tomorrow, September 7, 2012, the Stand Up To Cancer telethon returns for a third time. This year it is led by stellar performers including Taylor Swift, Alicia Keys, and Coldplay. The two previous events were held in 2008 and 2010. Stand Up To Cancer is a charitable effort of the Entertainment Industry Foundation that was founded by industry leaders who had been affected in some way by cancer. The telethon begins at 8 p.m. ET and will be featured on all major broadcast and cable networks. Other celebrities expected to take part include Justin Timberlake, Julia Roberts, Matt Damon, and Gwyneth Paltrow.