B&H has the Olympus OM-D E-M10 for $449 (reg. $599) for the body only. Additionally, the E-M10 kit with 14-42mm lens is only $499 (reg. $699). Both deals include 4% rewards and free expedited shipping. Check it out here at B&H Photo.
ebay (via Adorama) has the Nikon D3100 refurbished by Nikon USA (with Nikon warranty) with the AF-S 18-55mm and 55-200mm lenses for $269.99 in limited quantity. Check it out while it lasts here on ebay.