We are constantly on the look out for little things that will make things easy for you. This one is especially designed for you when waiting on someone to do something for you?
Monkey On Your Back is your to-do list for things that you want other people to do.
Create a monkey for each task you want to delegate to someone else. The free service sends that person email reminders about the task, and email you a reminder when the deadline for the task has expired, till you decide to take the "monkey" of their back.