The Belize Tourism Board has posted a video from Travel and Leisure that's all about Belize. Cayo is all over it, from the Blue Hole to Big Rock Falls, to Caracol. They have some good video from ziplining, hiking in the jungle, cave tubing, and horseback riding. It's a well done video, and was shot in high definition.
"Belize, the only English-speaking country in Central America, offers a unique combination of richly, rewarding experiences that make it unlike any destination on the planet. Swim with the exotic sea life along the Western Hemisphere's largets barrier reef. Explore the fascinating mysteries of the largest concentration of Maya sites in the region."