The one I'm looking for is played when someone has an epiphany regarding a hint and is now able to solve the question, or when the bag-head-guy explains the solution to the audience. It's an orchestra playing a four measure phrase, the melody is a fanfare played by the brass instruments (probably trombone or horns). I suspect it's from some movie soundtrack. Shows like DERO don't usually have music composed just for them.
Yes, I'm a geek. I learned to live with it. :Dv