Infinitesummer.org is a site encouraging people to read David Foster Wallace's Infinite Jest this summer.

Join endurance bibliophiles from around the world in reading Infinite Jest over the summer of 2009, June 21st to September 22nd. A thousand pages ÷ 92 days = 75 pages a week. No sweat.

Sounds like an interesting challenge.  Unfortunately I've already got 4 or 5 books on my 'to read' list that I'm not going to finish this summer.  Anyone up for an Infinite Fall/Winter?