Justin Timberlake isn't known for keeping his opinions to himself, but lately some of his comments have seemed even more self-assured than usual. He's planning on attending this year's Grammys, despite earlier saying he felt used and wouldn't return to them. In fact, to help promote the event, he sat with Katie Couric for a pre-awards show interview. There's no question that he's a talented performer, but his quick responses and tone of voice with Katie have us wondering if his head hasn't gotten a little too big. So, tell us — do you think Justin Timberlake is cocky or cool?