You should check out Delaney's Tap Room if ever in the New Haven area. They have over 30 beers on tap, some local (New England Brewery, right up the road), some regional (Ithaca Brewery), some imports (lots of Belgian brews), some standbys (Guinness, obviously.) Lately my favorite has been Old Engine Oil, it looks exactly like it sounds but damn is it tasty. I"ve been going to this bar for about 5 years and I can't remember ever getting a bad pint there. Extra bonus, really hot waitresses and bartenders and great wings!