100 days

U.S. President Barack Obama recently spent his 100th day in office, a mark primarily set aside to make sure journalists still know how to count. I've culled the Web for interesting articles and offer one serious link and two that I wish I had thought of. See if you can figure out which is which.
1. Slate's 100 days video
2. Slate's 100 days article
3. Pew's 100 days article