And the winner is....
The Caftan Pullover by Norah Gaughan. Clink on the link at left to get the pattern from the pattern store (or dig out your issue of Interweave Knits Spring 2006!).
Here's the schedule:
September 20-September 27: Get pattern, choose yarn, work on gauge swatch.
September 27-October 11: Knit back
October 12-November 2: Knit front
November 3 to December 1: Knit sleeves
December 2 to December 16: Finishing and blocking
December 16 and beyond: Post photos on the forum and wear your caftan to a many holiday events as you can!
I'm going to be using Sublime Merino Silk Aran in the color Fennel. I think the smoothness of this yarn will show the detail really well. There's no errata for this pattern, so we're all set to go! Oh, and here's the knit-along forum, too.