Ever wonder what you get when you reach the two million mile threshold? United Mileage Plus two-million milers recently had their choice of gifts: an iPod classic with “United 2 Million Mile Flyer” inscribed on the back, $200 Harwick & Grove Gift Certificate (wine), Tiffany & Co. engraved business card case, Tiffany & Co. globe cuff links or a deluxe leather notebook portfolio from Tumi.