Best seafood and atmosphere: def Aqua in Las Vegas. Excellent service and food, and v romantic too... =)
Closer to my area (CA) - my favorite for
"fix dinner" is Dinning room in Ritz in San Francisco, my favorite Sinapore/Mala/Indian food is Banana Leaf in Miliptas (San Jose area), and my favorite for outdoor, casual yet nice taste is Salley's in San Diego (next to Downtown Haytt).
Ok, that's my 2 cents.