It looks like a very cool accessory is now out for the Samsung Galaxy Note II. It's a SmartDock that allows you to charge the device and includes quite a few connectivity options including HDMI and 3 USB ports. Here's a quote from Sammy with the details,

The Samsung Galaxy Smart Dock makes it easy to take advantage your phone’s high-speed internet connectivity and super-fast processor. Connect an HD monitor, external storage device, and USB keyboard and mouse to turn your smartphone into a productivity powerhouse. Make messaging, editing documents and accessing media files a breeze. Plug in your 3.5mm stereo audio components or speakers and you have the ultimate pocket-sized home theater and computer in one.
You can order the SmartDock for just $99.99 from the source link below.

Source: Samsung