I have a Wacom Intuos 3. pressure sensitive and angle sensitive and i love it. Once usinh one of these you would never use a mouse for painting.
If you would like to see something completely hand painted in a few hours I will post my link to a portrait I did a little while back. (Done like a traditional oil paintng)
There is a bit of freehand digital on there. Go get a Wacom – spoil yourself! 🙂 You don’t need a big one, mine is 4.5×5.5 but an IT mate of mine tells me there is a screen one on the market now that is not that much dearer. I think I would still use a tablet the traditional way, watching a monitor though unless it was a large panel.
http://kayleenwest.blogspot.com/2007/09/photoshop-portrait.h tml