I am a die hard list maker. To do lists, grocery lists, books to remember to read lists. I usually just keep a pen and notebook with me at all times but I have found something so awesome...TeuxDeux!
"TeuxDeux is a simple, designy to-do app. If you like making to-do lists, you will love TeuxDeux. The idea was to build a bare-bones, but visually compelling and highly usable to-do app: Use the browser-based TeuxDeux at work/home and then take your to-dos on the road with the iPhone app. Yay for checking things off!"
Yay is right. It is beautiful to use, update and customize to make it your own. Watch the video here.