Do you watch the 30 for 30 documentary series on ESPN?
If not, you should. Because they're good. The same people have also created an off-shoot series of shorts that tell stories that might not be worthy of a full length feature, but are great at 10-15 minutes.
The most recent short is about the husband and wife that created the MLB schedule for more than 2 decades and why the move to computer automation might have us missing magical baseball moments.