CNET: Twittering on a two thousand year old event:

In observance of Good Friday, a New York church has been Twittering the story of the Passion--the biblical tale of the hours leading up to Jesus' crucifixion. This means that subscribers will receive 140-character updates coming from a set of Twitter accounts run by people playing characters in the story.

Now, I can think of a personalized twitter-based teleprompter for any event: a religious ritual, a medical surgery, a timed SAT practice test, ...