I don't think most of the people who go on this sort of show are desperate, though some of course will be. You sometimes see the same faces on different quiz and game shows. I've known people who've applied to go on Deal or no Deal and the Million Pound Drop, and others who've been on Eggheads, Pointless and 3-2-1 (the most confusing game show ever). None of them short of money, or particularly greedy. Surely it's just a step on from buying a lottery ticket for most people?
Passports not in the drawer I always keep them in. Turning the place upside down.