I just got the Wacom Intuos4 Medium Tablet for christmas, its so awesome. The pen is pressure sensitive (obviously), has function buttons on it's tip that serve as right and left clicking for the mouse, and if you flip the pen you can use the back as an eraser! Also comes with a pretty decent "wireless" mouse (the mouse has no wire, but it only works on the wacom surface, and the surface is plugged into the comp via a usb... so not really wireless
). The surface itself has a nice texture, 6 function buttons, a wheel (similar to an iPod's selection wheel) that does different things based on the selected function (zoom in and out, change brush size, etc. ). Overall its a sweet package.
Oh, and to top it off it came with free licenses to Adobe Photoshop Elements, Corel Draw, and Autodesk Sketchbook Pro.