Seeing the success of the Spanish Primavera Sound on these grounds (thank you low-cost flights!), I though it might be of interest to some of you a yearly festival that takes place every year in Castellón (very close to Benicassim, where the FIB takes place).
The Tanned Tin is an urban festival (no camping site) that holds about 30 gigs on a couple of theatres (all seated) of the city. Is organised by the people behind the spanish label Acuarela and it usually takes place on the first week of November and lasts for 3 days.
The very first bands have been advanced and it's looking promising:

The Ex
Acid Mothers Temple
Bracken
Mia Doi Todd
Grouper
David Thomas Broughton
Tarentel
For Against
Thee More Shallows