The point about using 3x5 cards to keep track of stuff you actually get done and then to make a quick hit list for tomorrow seemed especially useful to me.

I just found out about http://gootodo.com/ which allows you to use email to manage your lists, too. Gootodo lets you send it emails using specially formatted recipients that determine where in your todo list the email item goes. Then you just have it mail your your list in the morning. It might not satisfy the "where did all my time go today" itch but it sure seems to do the trick for tomorrow's tasks.