John Katehis, 18, murdered 47-year-old George Weber after they met on Craigslist and arranged a sexual encounter at the broadcaster's home.
Katehis, from Brooklyn, New York, winked and smirked in his videotaped confession and during court proceedings.
Justice Neil Jon Firetog handed down the maximum sentence at Brooklyn Supreme Court to Katehis who was dressed in a suit and tie and and had his hair closely shaved.
Prosecutor Anna-Siggac Nicolazzi called Katehis' brutal slaying of Mr Weber in March 2009 a 'thrill kill', according to the New York Daily News.
The murderer carried out the crime when he was just 16. Read More