Mr. Miller has worked in senior positions at Turner Network Television, Sony Pictures and Lionsgate Television. He spent the last 15 years in venture capital investing in companies ranging from College Sports Television, TVONE, Capital IQ and K-12. More recently he was a senior partner in Spark Capital which has invested in companies such as Twitter, Tumblr, Square and Oculus Rift. He currently serves on the Board of Directors of Nexstar, Double Eagle Acquisition Corp., and Green Dot Charter Schools.