I have a few.
I love Tequila (preferably slammers).
Sex on the Beach, which consists of Archers (Peach schnapps), orange juice, cranberry juice and Vodka, its really fruity and summery and when made properly makes two colors like a sunset, hence Sex on the Beach. Orange on the bottom and Red on the top.
I have never (touch wood) been sick or had a hangover when drunk. But I reckon if someone made me drink Absinth - pronounced Ab-Sin-Th would make me feel icky. I had it mixed with Vodka, Tequila and Red Bull, took one sip and yuck, thing tasted vile. It tastes like really REALLY strong liquorice (which I HATE). The next day I was smelling and tasting it everywhere, even though I had had one sip. Bleuch.