She was given the award for Special Achievement for National Impact on the 2008 Campaign.
The award was given by Reliable Resources, a group run out of the USC Annenberg Norman Lear Center at the University of Southern California. It's mission statement says "Reliable Resources was created to help generate conversation and ideas on improving broadcast political coverage. Broadcast news, network and local, has declined significantly as a primary source for campaign news. Our project seeks to design and distribute tools which would make political news enlightening, informative and exciting to local and network broadcasters."
"These Cronkite Award winners prove that thoughtful, informative political coverage can also make for gripping television," said USC Annenberg professor Martin Kaplan, director of the School's Norman Lear Center, which has administered the biennial awards honoring the distinguished broadcast journalist and longtime CBS anchor Walter Cronkite since 2000.
Here's a complete run of Couric's video with Palin.