I am always trying new mechanisms to help manage my extremely hectic life. There is an entire GTD world out there with application designed to help you manage task, email, and life in general. I’ve used a lot of them, from stand alone clients for Windows, Linux and Mac to web based, and maybe one day I will write about my experiences with them. Personally, as with most of the things I like working with, I gravitate to web based solutions and for the longest time I used a site called Remember the Milk but I was turned onto a new site today and I have to admit I have really taken to it. If you are looking for a good task management application I recommend you check out a site called Toodledo. Very nice tool
Here is a nice comparison chart of web-based to-do list
Check it out Toodledo.com