It's day 33 of the 100 days 100 pushups routine. To recap - I'm working up to the point where I'm doing 100 push ups a day. I started out doing situps as well, but ditched that early on.
And I can already tell the difference. So short summary:
Total Pushups since Day 1: 561
Total Pushups in the last week: 210
Not bad who was at 0 and 0 for the last 20 years.