Well, I wanted to do some clever wrap up to NaNoWriMo, but I feel the pressure of all the things I put off during the month ;-) So here's some more tips on getting unstuck:
Experiment -- Try to write in different places, at different times, and with different writing instruments.
Freewrite -- Choose one sentence in a paragraph and write a paragraph about it. Then choose one sentence from that paragraph and do it again.
Cluster -- Choose key words and ideas; then write associated ideas and words in clusters around them. This process often forms new ideas.
Be flexible -- Be willing to throw out sections of text that are causing problems or just don't work.
Follow a routine -- Follow a routine to get into the writing mood. Try activities like wearing comfortable clothing, using a certain pen, or listening to a particular CD or type of music.
Move -- Physically move around, stretch, or walk.
Take a break -- Get a snack or drink, talk to someone, or just relax for five minutes before starting to write again.
Concentrate -- Focus on a different section or aspect of your paper. This sometimes leads to new insights in problem areas, while allowing you to get work done on another section.
Re-read -- Read a print draft of the paper and jot down ideas while reading.
Relax! -- The more you worry, the harder it gets to think clearly.
These are from Overcoming Writer's Block.