This widget shows you upcoming events for a configurable iCalendar .ics file.
The package of this plugin is available for download at: http://downloads.wordpress.org/plugin/icalendar-events-widget.zip
This widget makes (in some topics partially) use of:
Normally you will select a "range date-to" greater than the "range date-from". But, if you set the "range date-to" lesser than the "range date-from" (or lesser than the current date, if "range date-from" is empty), then the list of events to show will be given in reverse order (aka descending).
Please check the icalendar.css file for style customization and the templates in the templates folder for styling options.