From the blog Sweet Caroline- use Woolite Foam Carpet Cleaner to clean your grout. It comes out in a nice steady stream, so its easy to spray and works like a charm. Simply spray, let set several minutes, brush and wipe away! - In this Crazy Life: Some More Tips and Tricks!
Ammonia for cleaning burners: Put a little ammonia and one of the removable burners in a ziplock bag and leave them overnight. The fumes from the ammonia will loosen the gunk, and you can wipe them down in the morning. I have done this and it works great!
How To Clean In Between The Glass On Your Stove Doors