I looked at this briefly when you made your original post, and got the impression (possibly erroneous) that extracting the one-off appointments is easy via Applescript, and the repeating ones, not so much. There is a tool out there that seems to have some of the necessary pieces, but it works by parsing the iCal files and I'm unsure as to whether it plays with the new MobileMe calendars. Writing a new project into the OF database with a list of actions retrieved from the calendar system seems like it should be relatively straightforward once the problem of retrieving the actions is handled. I assume you want to map appointment start time to action start time, and appointment duration to action duration?
https://github.com/scooby/dailyrepor.../trunk/#readme
I haven't had a chance to try it out.