Hey Lee and Sachi,

 When I was in Barcelona my sister took me to a local family run restaurant that served a multiple servings, family style meal that was fantastic and unlike anything else I ate in Barcelona.  It's called El Cargol and is somewhere in the outskirts of Barcelona (you need a car to get there).  I'll update with more location info and possibly a local contact to go with when my sister gets back to me.  I'd highly recommend it if you have a car.

-Dave H