Pinball petes is awesome if you like pinball. They have a lot of the best pins, all in one place. Midevil madness, Addams Family, Attack from Mars, guns and Roses, Austin Powers, Lord of the Rings, Pirates of the Carribean, Fun House, Monster Bash, etc - and that's only about 1/4 of the pins they have. Plus - they usually get the newest pin in from Stern. Granted, sometimes there are issues with some of them; but you have that with any pin on location.
The last time i went, it was pretty sad. They had no air, it was hot as hell, and it stunk like mad in there. I think they are having wars with the landlords, who are turning the place into a business like building as opposed to the mall it used to be. Back in the day, that was THE spot in ann arbor - it had Tower Records, pinball petes, etc. Now, it is a lot of office space type things, starbucks, etc.