I have done some more testing and can now reliably reproduce the problem.
Single events do not show up at all. Recurring ones will show up, just not the first instance of the event. In order for single event to appear, I have to set the date one week ahead of time, set it to reoccure weekly, and then put an end date a couple days after the "real" event to prevent it from showing up again. For example, if I've got an event set for the 14th and I simply enter it as a single event on the 14th - no go. However, if I set up the same event to show up on the 7th, set it to reoccure weekly on the same day and then set the end date on the 17th, everything works perfectly.
Seriously - anybody ever had this happen? What did you do to fix it? Obviously with a work-around, the bug is not life-threatening (not that it was anyway), but it is a little annoying - any and all help is most welcomed.