Have Today create a repeat to-do?

I often have to-dos that repeat - i.e. a task I have to do every Monday, or 2 days after the last time I completed it.

Would there be a way to allow a to-do created in Today be marked as "recurring" so as soon as you check off the To-Do, Today creates a duplicate of it the specified number of days later (or on the next specified day of the week)?

I know this is not an existing feature of iCal (I currently have to make a bunch of To-Dos manually, each with the appropriate due date), but wasn't sure if there was a way you could work around that limitation to make something that would work.