I believe that very little time is devoted to proper baserunning by most coaches. I'd like to see what ideas are out there and what other coaches are doing to promote what is, other than pitching and defense, the most important aspect of the game (IMHO).
My biggest pet peeve with the way baserunning is taught is the idea that a runner who has passed first tries to pick up the 3rd base coach half way to second. I see so many runners who could be on third end up at second because of the communication difficulty in doing this.