In reply to hereanthere:
It sounds like you are heading toward Connemara to the north of Galway. If so, Ailladie, the classic limestone crag in county Clare south of Galway, mentioned higher in the thread is in the wrong direction for you. But if you are tempted, get the FMCI Burren guide.
The original FMCI guides for the various Connemara cliffs are long out of print. But content is all on www.climbing.ie somewhere (the site navigation for the online guides is all f*cked up at present). The Carrot Ridge crag looks good from the road but up close is vegetated like some mid-Wales horror. Probably fun if combined with a hike over some of the Twelve Bens though. The nearest thing to a normal crag around there is Little Killary which has some nice single-pitch routes. The classics are the Pinnacle (VDiff), The Quiet (HVS) and Drown in the Sky (E4).
Due to the dire weather in Eire, Irish climbers seem to boulder a lot (between the showers, right?). I'd recommend downloading the guide at
http://www.theshortspan.com. There are a few areas in Connemara listed there.
If you like sea cliff scenery, there are jawdropping cliffs to look at on the Aran Islands ( see Burren guide) and Inishturk (
http://www.toby.fk.dial.pipex.com/inishturk ). Both/ either worth visiting even if you don't plan to climb.
Watch 'Tristan and Isolde' for a preview of the scenery before you go and do visit the beach at Glassilaun. A good place to camp in fact. Enjoy ...