Checklists vs To Do Lists

To try and stay on task, I attempt to follow David Allen's Getting Things Done. The system isn't perfect, though. GTD emphasizes use of to do lists based on context, e.g. Home, Office, Calls, Errands, etc. However, Allen never discusses how to handle repetitive tasks. I have solved this with my Palm Centro by downloading a program called Checklist. I have a checklist for Daily Tasks and Weekly Tasks. For monthly tasks, I have 4 checklists, one for each week of the month. After all, I can't do all my monthly tasks in one weekend. Anyway, when I complete a task, I simply hit the checkmark. Unlike the programs that come with the Palm, Checklist gives me the option of seeing or not seeing the items already checked, and it's easy to clear the list each day so I can start over with my check-offs.