Currently the only apps I remember having some functionality like this are calendar based ([RELEASE] Google Calendar, Task, and Reminder Search, [RELEASE] gCalendar Driver - Display working Google Calendars on HE Dashboards, etc.), but if those don’t work for you it wouldn’t be too hard* to write a custom app that would allow you to either paste a formatted list into an input area, or read it from a file that you’d upload via File Manager.
*I could probably write it in an hour or so on Monday if you don’t find another solution…
