The UFC's hype machine is in full gear, pushing a number of storylines for this weekend's monumental event in Toronto. Georges St. Pierre is facing possibly his greatest challenge yet in ground wizard Jake Shields; Jose Aldo makes his UFC debut against a very skilled Mark Hominick, putting his title and his hype on the line; and 47-year-old Randy Couture is betting on one last bit of lighting in his bottle before he hangs up the 4 oz gloves while Lyoto Machida, coming off two losses, seeks to get back on track and avoid the dreaded 3-Ls-in-a-row. Watch last night's episode of Countdown to UFC 129 and place your predictions below.