Oh goody, it’s checking the DVD for problems. Which, yes is a good thing. It would be horrible to have a scratch cause problems at 95% completed, ending up with a non-bootable system.
Tiger ships only on DVD. If you need CDs, you have to pay an extra $10, mail your DVD back to Apple, and then wait for them to mail CDs to you. Ugh.
It’s 9:11am, and the DVD check is at 16% complete.