Trent manages a web calendar. Here are some quick links:
WebCalendar also supports the iCal standard. This means you can import the events into your own iCal-compliant Calendar program using the following Subscribe links above.
(linux only) To setup in KDE's KOrganiser, File -> Import -> Import Calendar..., then paste the URI above into the location field. You should also then Edit... the resource to enable Automatic Reloading.
(all platforms) This is available as a Standalone Application or as a Plugin for the Mozilla Application Suite (includes Mozilla Thunderbird).
To setup, File -> Subscribe to Remote Calendar..., give it a name and then use the URI above.
(Mac OSX) Funnily enough Apple's iCal application supports iCal files. I don't use a mac though, so don't ask me how to subscribe to them.
(linux only) Gnome's PIM Kadjigger. This prolly supports 'em. I'll play later
Check out the list of iCal applications at iCal World.