Magnifico

It is a drawing pad and pen that you can use a bit like a mouse but you can write and draw on it as well. Here is my review:

Good Points

As it has a USB it works really well on a PC and a Mac - Plug and Play on XP and OS X.
It was easy to load
It is great for signing letters (eg my Christmas 'thank you' letters!)
Easy to transport if I want to take it to school
It comes with a little pen holder so that you don't lose the pen
You can draw pictures and diagrams. These will go straight onto the Mac word processor
It has a flap that you can put a drawing under so that you can trace it.
It can be used by left and right handers. The wire is long enough to change the position of the pad easily.

Bad Points

I found the scale difficult to get used to. If I was to buy one of these I would definitely get a bigger version so that my drawings and diagrams would come out the same size that I drew them. I am not a good drawer anyway and having to draw so small makes my final diagrams even worse than usual.
If the pad was bigger then the tracing feature would be brilliant for me.
(After using it for quite a time you soon get used to the size problems.)