I used this plugin to schedule a page update that I use for announcing scholarship recipients. We intentionally try to keep the recipient's name a secret until the announcement of the recipient is made at an event, but also like to update the website immediately afterwards.
With this plugin, I can schedule something like "Recipient to be announced on YYYY-MM-DD" to expire just at the same time as the recipient's name is scheduled to appear. I also don't have to worry about remembering to update it right after.
Great plugin, that has functionality that really should be able to be done in the core WP.