Some videos exagerating parents involvement in youth sports (from Hockey Canada's "Relax, It's Just A Game" public service announcements):
Traffic Violation
Golf
Grocery Shopping
Hide'n'Seek
Pin the Tail on the Donkey
Potato Sack Race

Public Service Announcement from Positive Coaching Alliance featuring Phil Jackson, 9-time NBA Champion Coach

Coach Parker's YouTube playlist...including some funny clips, training clips and general soccer clips.