Task Management in Gmail

I have become a big fan of Gmail, but I miss the task management functionality in Microsoft Outlook.  Recently I started to use Remember the Milk, which is integrated with Google Calendar and offers a very quick, stripped down task management web-based service.  Imagine my excitement when I read the Remember The Milk - Blog and found that they built and have released a plugin for Firefox that presents a task management column on the right side of your mail screen in Gmail. Task management is fully integrated into Gmail... It seems to work great and I am already procrastinating!