iMemento flashcards for iPhone

And the next way to brain yourself:
http://imemento.bplaced.net/index.htm

This is a great flash card system for the iPhone or the iPod touch (the model I use).
You can create your own flashcards or download flashcards. You can find tons of flashcards on the iMemento webpage. You can enter data on the iPhone or on the PC/Mac. It works with a clever Browser-Interface.

So keep on training your brain - every day!