The October Daring Bakers Challenge was doughnuts. I think the pictures speak for themselves...
Blog-checking lines: The October 2010 Daring Bakers challenge was hosted by Lori of Butter Me Up. Lori chose to challenge DBers to make doughnuts. She used several sources for her recipes including Alton Brown, Nancy Silverton, Kate Neumann and Epicurious.
Recipes are here
A specific and heartfelt shout out to Audax Artifex for his amazing help with the challenge.
You must make these. My words can't do any justice to the doughnuts, so all I can do is encourage you to go make these right now.