that is way too general of a question, since there are different styles of beer, such as porter, stout, bock, mead, cider, wheat, lambic, black and tan....
one of my all time favorite beer that im most tempted to buy is celebrator, which is a bavarian double bock beer. it has this creamy mouthfeel and subtle smoky/roasted finish with a great taste....chewy malt, chocolate, molasses... man i wish i had one on me