Acer Aspire AS5741-3541 15.6" Laptop for $579.99 shipped.  Here is a screenshot for your reference.  This laptop features an Intel Core i5-450M processor at 2.4GHz with Turbo Boost to 2.66GHz, 15.6" LCD at 1366 x 768 resolution, 4GB DDR3 RAM, 500GB drive, DVD burner, HDMI, webcam, wireless 802.11b/g/n, Gigabit Ethernet, media reader, 6-cell Lithium battery, Windows 7 Premium (64-bit), and more.  Most places have it for about $669.