Although this really isn't a beer cocktail, it is named after a beer so that's good enough for me!
I fell in love with Patron XO Café at first taste. It is smooth and delicious and very coffee. Mixed with Bailey's it simply wonderful. Much like a smooth creamy stout.
1.5 oz Patron XO Café Tequila
3/4 oz Bailey's Irish cream
In separate containers chill Patron XO and baileys over ice. Pour Patron XO in small cocktail glass, then slowly pour the Baileys down the side of the glass to float on top.