Buy.com offers the LG 42" 1080p LED-Backlit Widescreen LCD HD Television, model no. 42LV3500, for $599.99 with free shipping. (Proceed to checkout to view this price, and be sure to select "Budget Shipping.") That's the lowest total price we could find by $73, although we saw it for $11 less five weeks ago (since expired). Features include a native resolution of 1920x1080 (1080p), edge-lit LED backlight, 3,000,000:1 dynamic contrast ratio, three HDMI inputs, and VGA, component, and other video inputs.

Update: It now drops to $588.99 after checkout.