If you want to talk about the kick from a single race, how about Mills 1964 Olympic 10000. Wasn't he 24 - 25 seconds in the last 200, shortly after being knocked / elbowed to the outside by Gammoudi? He destroyed everyone mostly in the last 100 though, so his last 100 split would probably be even more impressive. Here's the video clips from the last lap:
http://www.mines.edu/Outreach/k12/mathc ... .show.html
What's really neat about that race is that nobody expected Mills to amount to much that day.