There are tons of things to drink that taste great.
However, making the woman happy is what counts. They like fruity drinks first and foremost. They have expensive tastes. (Can't just have vodka, must have rasberry stoli, etc)
Cheap drink and women love it would be a 7&7. Seagrams 7 and 7up.
Shots would include, again anything fruity, blowjobs, sex on the beach, McGillicuddys, Tequila rose.
Beer, on the other hand, has been mentioned already. The Smirnoff Ices of the world. Just don't get that new black Smirnoff ice crap though, have bought 2 at a bar when I wanted the original and couldn't give them away)
A change of pace from beer and liquor and can be drank by both the guy and the gal would be twisted tea. I like to drink that occasionally for a little changeup from my usual tastes.