Guiness is another fav of mine though I dont drink it too often. A few years back Fridays had what the called a "Sam and Black", being a tan and black drinker on occasion I have drank a lot of these concoctions and they are great, especially in the fall when it was Octoberfest and Guiness, two favorites in one!
Beastin- Not sure if you have ever heard of this or tried it but was something my dad told me about and shared a time or two, but it is called a Boiler Maker. Short glass with some Jack in it, warm-actually to me is better straight and warm than on the rocks but just my pref- take a swig or two Jack and chase it with a beer. WOW does that hit you like a ton of bricks in a hurry! Havent had it in quite a while but goes really good together.