Thanks man. I have definitely gotten stronger. I usually bust out the 20 reps in the first set without a problem now.

I think my goal for 100 will be 20-20-20-20-20, and then I'll keep it at 100 total but work on increasing set size (such as 40-40-20) and movement technique (diamond push-ups, etc.)

I'd like to work on pull-muscles next, but it's hard to find a convenient exercise for this that doesn't rely upon equipment (like a pull-up bar, rings, etc.)