Funny how those things come in bunches sometimes. There was a day last fall where I first helped a woman push her dead car to the side of the road (she had a cell phone so I left after that). Then I stopped and helped a (sort of newbie) cyclist who was stuck in the dark about 1/3 up Page Mill with a flat tire and no pump.
Anyway in the past I have definitely been "that guy" who needed a friendly bailout so I'm usually pretty happy to lend a hand to others