T. Foster said:
I do like the "problem-solving" style of play as both player and DM, which is why I like Tomb of Horrors, and why I'm currently gearing up to run Gygax's "Necropolis" (the final section of which is essentially Tomb of Horrors on steroids), but I realize it's not for everyone and agree that it seems like a very odd choice for introducing new people to the game -- if they like the module too bad because they'll never play another one like it (except possibly "Necropolis"); if they don't, the fact that they'll never play another one like it is little consolation if it's made them lose interest in the game altogether.