when I read this was a 10th anniversary celebration I immediately thought of Silverstein's example. They did 4 concerts, each playing one of their albums from the beginning to the end, filmed it (with pretty good directing from robby starbuck) and released a live DVD with 22 songs. furthermore they did a documentary focused on the history of the band, in which they've talked about each record, the evolution of the band, etc.
and they've released the DVD/CD for 15 dollars or something, which was cool too