RE: Creative Block

Definitely a common experience... I am downloading Unstuck right now to see how it works.
Sometimes the best way to get over it is to walk away from the project. When you're working on an extreme deadline that doesn't always give you much time away.
I've found one way is to start mind-mapping as though you haven't worked on the project yet at all.
Another way is to find someone you work well with, or who gives tough critiques, and ask them for any feedback.

But the way I've found to most consistently get me over that hurdle, is something Ed Gold told us in every class. Fill your brain with as much information as possible, and then forget about it. It seems silly, and not productive, until it works. I will read as much as possible on a subject, watch videos, etc. and then go do something that shuts it out of my mind like pleasure read, play a video game, or watch tv. Taking a shower is a great way to shut out the idea, and generally seems to help everyone find a new approach to a problem - as Amy mentioned in class, she keeps a waterproof notepad so she can write the ideas down. Going for a drive (don't waste gas!) or a walk, or just explaining the problem to a non-designer can also get those brain hamsters running again!
Worst case, if you can't break through, just doodle. Something in your subconscious will take over and help you find your answer. Usually.