Felix Arvid Ulf Kjellberg, better known by his online alias PewDiePie, is a Swedish producer of Let's Play videos on YouTube. Since 15 August 2013, PewDiePie's channel has been the most subscribed channel on YouTube, being surpassed briefly in November and December 2013 by YouTube's Spotlight channel. Holding the position since 22 December 2013, the channel has reached over 34.8 million subscribers, as of February 2015. On 19 July 2014, the channel surpassed RihannaVEVO to become the most viewed channel of all time. Currently, the PewDiePie channel has received over 8 billion video views. Due to his popularity, PewDiePie's coverage of indie games has created an Oprah effect wherein their sales have been posted, and he has raised money for charities through his "Bro Army" fanbase. Aside from his online activities, Kjellberg has made appearances in other forms of media, including radio and television.