My favorite is definitely the black mamba, those little suckers are fast and beautiful to boot.

I am dying to one day get a venomous snake (no pun intended). They are just such an amazing creature to own. I would make a huge natural display tank for it.

I'm pretty good at handling snakes, and I have some slightly venomous ones already. One of them is a real meanie and tries to bite me all the time. It's been great practice, because I now am excellent with a snake hook and tube.