Santa Ana doesn't have much. We got TONS of malls in that area. Unless you're with family, Disneyland is a total waste of money. A better bet is Six Flags over Magic Mountain. The queen mary ain't much either. We have this thing called the Block if you're part of the younger crowd. Its got a big AMC move theatre and a bunch of stores.
We have a TON of PC cafe's also. You could go laser tagging, go karting, or take some trips to the beach.