In reply to abstractmachine:
Trying to sample the very best of the best of Catalunya climbing in only 7-8 days is a bit of a tall order...
That said, a few zones are regarded as 'must visits' on the world sport climbing scene and these would include Montserrat (only the south side at this time of year), Siurana, Margalef, Camarasa and Terradets. But really, there are dozens and dozens of high-quality sports venues right across the region.
For bouldering, there's Savassona and Can Boquet, neither of which is very far from Barcelona, as well as El Cogul in the west of the region. Information regarding the latter can be found here:
http://www.lleidaclimbs.com/p/bouldering-el-cogul.html
Pete.