If it can be done to Guinness, Lis Doon Varna is doing it. I loved the Irish Car Bombs. They used their homemade whiskey-based cream liquor for them, and it was amazing.
I get annoyed by the generic Irish pubs on every other corner, sporting nothing but a shamrock here and a Guinness ad there, but the decor at Lis Doon is refreshing. I'll update my review when I come back for the food...but don't let me have too many pints. Guinness and Cider is addictive.