I use occasionally use Crash Course videos in my AP Biology class as a precursor or addition to my lectures. This is my write-a-long, or WAL as I call them, for two videos combined into one worksheet: the water and carbon cycles (10:04) and the nitrogen and phosphorus cycles (9:22).
My WAL is broken into the sections shown within the two videos. It's mainly fill-in-the-blank; at the end of the video, I include a summary section with 15 "identify the cycle" questions.
Please note that there is no key included with this product. It's good for you to watch the video so you know what your students will see, anyway :)
Also note, again, that this is for two separate videos--you might want to avoid assigning both in one night, as the two combined last about 20 minutes. I always tell students that if a video takes 10 minutes to watch, expect to spend 15-20 minutes on it with all the pause/play/summarize stuff they have to do.