Extensive (And I Mean Extensive) Yellowcake/Niger/Plame Timeline
Rove-a-Palooza

Daily Kos diarist ToqueDeville republishes an article by Roger Morris, a National Security Council staff member during the Nixon administration, which comprehensively puts everything involved in this scandal (and really, it's not just about outing a CIA agent) into an exhaustive timeline. I highly recommend going through it, but it'll definitely take your lunch hour. So grab your tuna sandwich and Odwalla juice, and dig in!