I have just endured this painful wait time. It is painful, but you can do stuff while you wait. Here's a quick list I compiled to hopefully help you in your need:
1. Go watch T.V. Anything really. As long as it's able to hook you long enough. Cartoons are awesome for this.
2. Look for more porn. What a better way to notice when your download is over when you keep downloading more? I feels like instant download in a way.
3. Put something in the oven. Something that takes like 30 minutes to bake. You'll be happy to have some hot meal to eat after you're done.
4. Write anything that crosses your mind and do it.
Share your own techs!