The Great Disappointment

Meri and I just watched a documentary called "The Devil's Playground" about the Amish rumspringa, when Amish children leave the Amish way of life at 16 to decide whether they want to commit their lives to Christ or not. This prompted us to read entry after entry on Wikipedia about various sects (on a Friday night). This, no doubt, was the greatest entry we came across:

Great Disappointment

The Great Disappointment was an event in the early history of certain Christian denominations, when Jesus failed to re-appear on the appointed day of October 22, 1844 as some Christians expected.