try the ship and mitre,its got a us beer festival on at the moment, heres the websitehttp://www.theshipandmitre.com/ the belvedere, the caladonia and the philharmonic are good, the dispensary on renshaw street serve an excellent pint but the landlord is a total p.i.t.a.the fly in the loaf and rigsbys are great well run pubs too. the baltic fleet has its own microbrewery in the cellar and the beers damn good too
And add to Critch's post , if its still raining heavy .. try Mathew Street , all the pub's are right next door to each other ... so you can fall out of one into another .
But make sure none of the lad's are wearing trainer shoes because the doormen wont let you in half of them , anyways have a good'un mate