Hmmm, are we speaking in terms of captives or just in terms of animals in general? Because all of the reptiles listed on the poll would definitely make my top 50 as animals, but I feel very strongly that half of them should not be kept as pets.
But I would have to say my top 3 (in general) would be...
Drymarchon couperi
Any Boa constrictor ssp.
Varanus sp.
Closely followed by Rhacodactylus leachianus