Video After The Jump   Looks like Jay-Z is not the only hip hop heavyweight Justin Timberlake has collaborated with for his upcoming album, The 20/20 Experience.   Grand Hustle CEO, T.I. says he's also been in the studio with JT.   "Yeah, I spoke to JT. Me, him and Tim was on the phone. They were working on a record together, and I had the pleasure of assisting them on their particular record,…