When I left my job in Alaska to move to Oklahoma for a new job opportunity, I did so just after we started working with a client on an animated commercial for their business. Since we were really basing the entire concept on my doing the spot–I was the only one with animation capabilities on the team–I was hired on as a freelancer to finish up the project while I transitioned into my new job.
It was an interesting project and there was a lot of back and forth as the entire premise of the spot would eventually change. In the end I created something that the client was happy with and I was fairly proud of.