If you haven’t heard of or used Jott yet, you should check it out. Especially if you’re an iPhone owner. Not only is Jott already a really GREAT way to keep track of todo’s and reminders (along with a BUNCH of other cool things like sending voice “jotts” to your friends via email/SMS, posting to websites like Twitter simply by talking, etc, etc.), but their iPhone app rocks. It lets you record “Jotts” or simply type them. It’s slick.
I’ve been starting to use Jott for simple reminders to myself. When they started out it was all about voice notes. (And their transcription works pretty darn good — it’s not just computer powered, there are actual people involved, so it’s smarter.) But now you can enter quick text “jotts” too, which makes it more useful on an everyday level. You can voice-jott if you’re in the car or whatever, but then just type-jott if you’re at your computer.
Anyway, check it out.