If you haven't had a chance to check out some of the coverage from The Cream event a few weeks ago in NYC, you're missing out on some good wedding reception decorating ideas! Giant gold letter balloons were a big decor element for some of the tables (mine included!)....they really make a grand statement whether at the altar or at the reception.
You can generally find them cheaper online than in stores, and then have them blown up at a local balloon shop, as long as you leave extra time for potential delays. Add them with some standard balloons for a fuller effect!