Can't write home about too many "great" American beers, as they're all pretty much easy to drink and watered down.
If i'm pounding back beers, MGD gets the call. Cheap and easy.

If I want something more flavorful, I go for a nice pint of the dark stuff...Guinness, or a black & tan with Harp.
Nastro Azzurro is my favorite Italian beer.
Also been drinking a lot of Red Stripe lately for some reason? The Jamaican in me!
