Ohhhh tequilla....love it! Nasty ol' stuff though in the morning.
Drink a TON of water the night before - does wonders for a person in the morning.
I've heard (never felt good enough to try it though
) that soda and bitters works well....pretty much the only place you find bitters nowadays is in a bar though so if you're going there you might as well just line up another Cuervo!
For me....milk is the only thing I need to cure a hangover. If I don't have any....ohhhh look out!