Escape across from Rainbow Beach Club is very good. I also liked Blue Fin in the casino complex when I went there last fall; it was closed the night I tried to go there in June. Bar Code is good for a more casual experience, and I've heard good things about the Spaghetti House although I haven't been there myself yet.

And I have to agree with Carol about Mario's. I went there last Nov/Dec and had their signature duck. It certainly wasn't bad, but I've had better duck dishes here in Portland. Lovely setting but I wasn't that impressed with the food.