Corona with a twist of lime
Amaretto Sour (its liquid candy)
Mudslides
My friends and I make a great drink called "Red" that's become quite popular. Its really easy too - Get the canister of Tropical Punch kool aid and get enough powder to make one pitcher. Then, add as much alcohol as desired (usually, we just dump a bit of everything - Vodka, Tequilla, Rum, Bacardi 151 (not too much of that though). Then we add the water until the kool aid appears to be a good consistency. Then you just keep adding powder until the taste of the alcohol is gone. It makes for LOTS of fun