Once I had whished that TaskCoach is a available on the N900. But then I realized that the app is one of those which is not suitable for mobile use in its current form.
TaskCoach has a special version for the iPhone which lacks some features and looks different but uses the same data. This would be the way to go for Maemo/Meego.

Plus: Making TC available is not a matter of porting TC itself but of porting wxpython to Maemo and hildonize it.