It is not easy finding the best baritone ukulele videos but it is real satisfying when you find a treat like the videos below. Often they're hiding on YouTube without "baritone" or "ukulele" tags. Here's some great tunes from a concert at the Island Bazaar in Huntington Beach, California April 3, 2011.
Happy Trails to You (English y Espanol)
Along the Navajo Trail
That's What I Like About the South
Four Thousand Rooms in Amirillo
Bob Wills & the Texas Cowboys