I got the "Save a Horse, Ride a Cowboy" shirt because of my long-standing love for "The Magnificent Seven" tv show... woefully canceled in 2000. Since then, though, CBS hasn't produced anything I think is worth watching. Their loss... Anyway, the second season will be on DVD at the end of May. V. excited about that.
And here's the song vid I found on myspace which precipitated the need for the shirt: