Okay, something to report.

Subscriptions that do work in Google Calendar:
Sunrise/Sunset
Weather Forecast
US Holidays
Christian Holidays

Ones that don't that I've subscribed to are:
Football
Hockey
Basketball

Probably Baseball too even though I personally would rather watch 3 hours of farming than a baseball game. *lol*

Hey, slightly off-topic, anyone have a good idea on creating a gadget?

http://code.google.com/apis/calendar/gadgets/sidebar/


Edit:
Found a bunch of them here:
http://www.google.com/ig/directory?type=gadgets