Just yesterday my mom & I were talking and she brought up how much she wanted to replace her coffee table! It is black metal with a glass top. I have seen so many changes made with spray paint lately that I suggested she paint the under-side in black. And, it just so happened that she had a can left over from another project. We hung up and she got to it! About 3 coats later, this is the result! The sun was creating a glare, but you get the idea. :) I think it looks great! (Sorry, no "before" picture.)
Update: Aparently their cats did not realize the table existed before, and now they think it is fantastic and want to sit on it all of the time!