Dice Bar...just past Smithfield (Chilled Atmosphere...a good starting point)
Sin é (pronounced eh??) on the Quay (North side...great tunes and it feels like your in a Submarine)
Boars Head on Abbey street...old man pub with alot of lads talking mad shiite!
Grogans on Dames Court(legendary pub...hasn't been renovated in about 90 years...seriously, but the pints are magic)
Flannerys (great live acts) on Wexford Street
Copper's(Nightclub) on the South Circular (Full of horny women form the south
)
Dice Rileys on Harcourt Street...pub/club...lots of college chicks and a huge beer garden for the smokers.
After that it doesn't matter where you go to as you will be nicely mashed
Temple Bar is definitely a bit of a tourist trap but worth a look. Mabye just to pick up a Aran sweater and some English chicks over on a Hen night or a tasty Kebab!
Don't be surprised if you get charged ?6.00 a pint though and ?15 for a cocktail
The city is full of good pubs though, it's can be a little tricky to find them sometimes though
Enjoy!!!