The Olympics
Kumba Mela
Times Square on midnight at New Year's
Burning Man
TED
The Super Bowl
Calcio Storico
Warren Buffet's annual meeting
The Macy's Thanksgiving Day Parade
Your birthday

People love them. We generally agree we don't have them often enough. What if you started one? More than half of the events on the list above were started by one person or a small organization.