This app was mentioned in 3 comments, with an average of 1.00 upvote
You might also check out Crackle and Jerry Seinfeld's "Comedians in Cars Getting Coffee". It can be casted to the Chromecast although I experienced some bugginess last night and I had to disconnect and reconnect from the Chromecast before each episode (YMMV, hopefully that will be fixed soon).
EDIT: You might also check out the World Endurance Championship/24 Hours of Le Mans app. "To immerse yourself even further into the FIA WEC® experience get the Premium Season Pack available as an In-App purchase. It will allow you to follow FULL LIVE streaming of each race as well as FULL DATA TIMING, exclusive content with onboard cameras and the possibility to personalize and follow your favorite drivers and/or teams." For the 2015 season it was $14 for 2 races.
EDIT2: You could also probably create a Youtube playlist (or find someone elses) and cast that. See Le Mans TV for potential videos to choose from.