Source: http://twentytwowords.com/squirrels-navi...

Steve builds the squirrel assault courses in his backyard then records footage of squirrels running through the course on video, adding the kind of real-time commentary that makes Steve Barley’s squirrel videos some of the finest the internet has to offer.

Hopefully Steve will continue to have plenty of free time on his hands in the future so he can keep building squirrel obstacle courses, and we can continue to watch him talk about squirrels on obstacle courses.