Wescott master exercise work

@jbau Just wanted to fix the thumbnail times. Please review at your leisure. 

Updated 18 Jan 2013 to include fix for #1892 (which sailed the ocean blue, give or take 400 issues...)

![Screen Shot 2013-01-18 at 4 32 21 PM](https://f.cloud.github.com/assets/931665/79857/c6d931a0-61cf-11e2-86a6-e0cada431fd9.png)