@Jackie - I did yours yesterday and am happy to report that I actually retained the information (the terms) to pass Gerard's today. So clearly it was effective learning.
@Gerard - My users are not computer savvy so I'm always looking for ways to interact without too many instructions. I liked that your home screen was simple and self explanatory (while still being appealing to the eye). I failed the Dating Game - oops!
@Tim - I love the moving background on the intro page, and playing with the sliders was fun. It was neat to see the font change without having to highlight the text, etc.
@Jeff - I'm not always a fast reader/processor so I had to scramble to complete the first one in time. I really liked that users can unlock a next level. I want to start working with unlocking levels (heck, I could even use that in my current linear format, but it would sound more exciting than "you are now moving to the next section"!) and badges and other rewards
I need to look back in the challenges for some Presenter/Quizmaker examples since that is what I'm currently using. If there's an easy link, feel free to share. :)