How do I view other people's calendars in OWA?

Answer: 

For this to work, you must be using Internet Explorer 6 or later, and you must have been granted access to the user's calendar.

The format to type into your address bar is https://ccmail.cc.gatech.edu/owa/username@cc.gatech.edu/?cmd=contents&module=calendar&view=weekly.  Username should match the user's CC domain account (e.g. gpburdell).