Oh Gawd, as the first rater for this scion of beer and whiskey and oysters and pub fare, I’m tempted to just give it a 100 score and the word GO! as a comment. Visit the place and you’ll never forget it. It somehow feels like a small pub, even though it truly takes up the WHOLE BLOCK in the world famous area its named for, Temple Bar. Since 1840, this bastion has been drawing pints and slinging whiskey’s like there’s no tomorrow. It is arranged in a slew of smallish "ante-room" style with no less than a dozen rooms with their own style and character, and a great center beer garden with an open air place to smoke (a growing rarity even in Europe) and retractable roof. Heaters are there in the winter. The beer selection is above average and whiskey selection the best you’ll find. Because of the crowd, it may take a bit to get a pour but the staff does their best. The oysters are really great too!
This is probably the best place to have a beer in the Temple Bar district in Dublin. It is crowded as you’d expect for the area but the place is huge and you’re sure to find someplace to sit. I ditto everything GlobalVillager said in his comments below. If you’re in Temple Bar, you simply must go to THE Temple Bar.