SerVaas Laboratories - Bar Keeper's Friend (Rating: 5)

I buy most of my tools used, and that usually entails cleaning up metal surfaces that have been left sitting. For tables and other flat surfaces, I use Bar Keeper's Friend since it is a mild acid that breaks up rust pretty effectively and it's cheap. I've uploaded some before and after pics of my bandsaw table. It doesn't clean/polish the table 100% but it definitely makes huge difference. 20 minutes with a green scrubbing pad followed up with some paste wax, and the table is smooth and a joy to use again.

As always, please excuse the mess that is my garage.