My dad was my scout leader. He had 50 scouts get their Eagle while he led our troop, including his three sons and two nephews. He was a stellar person and was fundamental in shaping the character of many "important" leaders in my hometown and state.
He did it old school, military style and would be sued or booted from scouting in today's climate due to the type of troop he ran, but I'm grateful for everything I learned in it.
As for pervs in scouting, I knew (and was obliviously hit on by) one of the most notorious and dangerous pervs in scouting history: Jack Walls.