I read this article and really enjoyed it...thought others here would too:
An interesting one I read today (from Babylon 5 creator J Michael Straczynski's tweets) that Number 6 was Number 1. McGoohan's character was offered #1 but didn't believe in the program; said not everyone can be broken, torture doesn't work and wouldn't work on him. They said if he could prove it, they'd stop the program. He did, and they did.
Patrick McGoohan's What "Really Counts" Order1. Arrival2. Free for All3. Dance of the Dead4. Checkmate5. The Chimes of Big Ben6. Once Upon a Time7. Fall out (Conclusion)