I wandered over from Quova and had lunch with three friends (Pat, Wendy, and Seth) at Cascal. It was a beautiful northern California day - the patio was full and buzzing. We sat inside and had an incredible tapas and paella lunch. The tapas sampler was great - a little meat centric (I'm a veggie), but still plenty of veggie stuff. I think had veggie paella, which was A+. Service was a little off, but that's easy to give them a pass on since they were swamped.
If you like Spanish food, this is a superb place for lunch.