'So You Think You Can Dance' Season 6 Finale: Nigel Lythgoe & Mary Murphy

'So You Think You Can Dance' Season 6 Finale: Nigel Lythgoe & Mary Murphy

“So You Think You Can Dance” executive producer Nigel Lythgoe and judge Mary Murphy share their thoughts on why Russell Ferguson really earned his first place finish on the show. Plus, do they want the next season to start in the summer or fall of 2010?