Oh-My-Gosh  my first Rose parade with HD!  It's soooo beautiful!   It's like I'm there!
I vow that someday, I will see the Rose parade in person.
Plan carefully, if you do go.
The parade route along Colorado Blvd. is a zoo, starting at least 24 hours before the actual parade, with revelers blocking the sidewalk as the camp out for their viewing places.  I mean, it is literally mobbed.  If you want to do the parade this way, make sure you're with a good band of co-revelers, and plan on a long, chilly and noisy night.
The other option is to book ahead, paying for seats in the grandstands (set up weeks in advance), and also for a hotel room nearby.  Pricey.
You might be better off staying right where you are, watching the event via your HD television.