This is such a cool idea! I think it works best for comedies (Stand By Me is an odd choice for the wave). Pineapple Express and Step Brothers look good. I'd probably grab those. I really like the Ghostbusters one, but I don't need any more copies of that flick.
Got these at Wal-Mart, $7.96 each. Nice looking, but the spines do not match the front, they're the same spine fonts as the regular releases of these titles.