This documentary, “Fastball,” is fun to watch, and currently, it’s available for free through YouTube. Kevin Costner narrates, and you also get to hear from Joe Posnanski, Derek Jeter, Goose Gossage, Hank Aaron, plus a number of other hard-throwing pitchers and the hitters who had to face them. The documentary is rich with stories about many of the great fastball pitchers in the game, both past and present, and I even found myself experiencing small surges of adrenaline as I watched. The science presented in the film is fascinating, as well.
It looks like you’ll have to make your way to YouTube to watch it, as I’m unable to drop the video here due to restrictions. Definitely check it out, if you get the chance!