Ahh, so true. I've been writing code with pygame ever since its first release more than a year ago. It's stable, aggressively maintained and very well documented. I'd recommend that anyone who's interested in developing cross-platform games in python give it a try.
If you want to start writing fun and portable, games *now*.. I can't think of anything better to use than Pygame. Oh and it's also great for application programming too ;)
An open, cross-platform journaling program.
A scientific plotting package.