From MacCoreMac Software:
Mental Case brings premium quality flash cards to your Mac and iPhone. Use it to learn a language, memorize trivia, or study for an exam. Mental Case automatically generates lessons for you, syncs them to your iPhone or iPod touch, and even tells you when to study.
Mental Case is also a drop box for useful information that you come across in the course of the day. With built-in screen and iSight capture, Mental Case can collect just about any piece of information from the real and virtual worlds, and will remind you about it when you next sit down to study.
You can enter text, drop in an image, take a screen shot, or snap a photo with your iSight. Your new mental note is scheduled to appear in future lessons, beautifully-presented slide shows which make studying something to look forward to.