For a TV show involving the general public, its actually pretty good (and its not full of people just trying to be famous as you actually have to be intelligent!)
Difference quiz type things. Maths type questions with a time limit to answer, tonight there was a picture round where you had to make words from the pictures, last week the contestants were in a box, and had 4-5 puzzles to complete, some with cryptic clues.
Sure theres better bio's on it somewhere else that might make it sound better than ive managed