I highly recommend doing this when you get a sought-after item. For instance, today my new iPod arrived through the mail. My old iPod broke months ago, and I was literally going through some nasty withdrawal because I hadn't been able to listen to music for more than a few minutes a day. So the package arrives, I open it, take my new iPod, hold it over my head, and yell, "dah dah da-DAAAAAAH!" for all to hear.
It's fun!