Metrodome - Meh. Decent place to watch a football game. Leftfield seats are the best place, imo, to sit. Tickets are good price. But pretty junky.
Arlington Park or whatever - The best place I've seen a game, though it may have been because it was outside
Yankee Stadium - About as trashy as it can get. But good atmosphere with the Yankee fans. Very dedicated, but pretty pricky. In the end, the Metrodome has cleaner and nicer facilities than Yankee Stadium.
Shea Stadium - Very fun looking stadium. Beyond the fence is fun to look at, but the airplanes are constant and annoying.