Below are examples of some of the work he has done for Target.
As simplistic as they seem, I find them to be quite eye-catching. Additionally, these are some examples of small projects he's done in his free time.
Throughout his tutorials, Glen stressed the importance of creating content simply to have on the web for people to see. He recommends keeping a blog. The number of reblogs you get on a post can potentially be the livelihood of your craft. He explained that a good deal of his freelance work comes from people on the internet who have some across his work and appreciated it enough to give him a call. I don't know what I imagined that path of an animation career might be, but I certainly never considered gif making to be the key in. Glen, however, would definitely disagree.
Find more of his cool work here.
DigitalSandwich.net (also run by Glen) has some great tutorial references as well.