Amazon.com offers the Roku HD Wireless Media Player for $69.99 - $20 instant discount = $49.99 + free shipping. This is the lowest price we could find currently.

What this does and why you need it:
Features includes High-definition streaming up to 720p HD, Works with virtually any TV, Built-in wireless (Wi-Fi b/g/n) and wired Internet connectivity, microSD card slot, Bluetooth 3.0, HDMI output, and more.