I saw this project about learning the Gettysburg Address, so thought I would add it to the memory challenges section:
To celebrate the 150th anniversary of the Gettysburg Address, documentarian Ken Burns, along with numerous partners, has launched a national effort to encourage everyone in America to video record themselves reading or reciting the speech.
There are several versions:
Here's the text in PDF format, if anyone wants to try it:
If you memorize it, post your technique below.