Improve our mobile web site
Faisal Mughal came in to a site-upgrade project, on a site he'd never seen, and did a great job for us. He created a customized mobile version of our site, using CSS only. I couldn't believe how fast he got it done. I figured it would take two weeks but he did it in under two days! He proved equally adept at making a slight change I needed on the desktop site, knocking that task out in about 30 minutes. Highest marks for quality, value, and professionalism.