For cheap: gingerman pitchers or B&C monday-wednesday.
For stupid expensive: Fitzsimons. 10 euro in, 6 euro for a pint of guinness poured in one go. I still can't put into words how the Fitzsimons situation left me. If Jesus, Moses, Allah and God almighty himself had got together for a discussion about the price of a pint in Fitzsimons they'd come out confused, pissed off and certainly sober.