Nigel Lythgoe is a British television and film director, producer, and choreographer. He is best known for being a judge on the popular television show 'So You Think You Can Dance' and as the creator of the show 'Pop Idol'. He is also the executive producer of the show 'American Idol'. Nigel Lythgoe has been a judge on 'So You Think You Can Dance' since 2005 and has been a judge on 'American Idol' since 2010.