In 'Gossip Girl', who is revealed to be Gossip Girl in the original series?

In 'Will & Grace', what is Grace's profession? In 'Will & Grace', what is Will's profession? In 'Glee', what is the name of the show choir? In 'Glee', which coach is the club's rival and cheerleading leader? In 'The O.C.', in which California city is the series set? In 'One Tree Hill', what sport is central to the story? In 'Friday Night Lights', what sport does the Dillon Panthers team play? Which actor played Coach Eric Taylor in 'Friday Night Lights'?