At my lightest, about 3 years ago, I used to be able to bang out a set of between 20 and 25 pushups on my toes. (I could do even more if my feet were elevated; I think my shoulders are stronger than my chest muscles.)
Today, I’m a little bit heavier, and I have trouble just doing a set of 10. So now that the kids are back in school, I’m going to work on getting my pushups back up to their peak. I started this morning by doing 3 sets of 7, with about a 15 second rest in between. Finisher: 2 games (10 songs) of DDR Extreme, doubles.