There currently exists a channel on YouTube called ForOrchestra. The channel is owned by composer Walt Ribeiro. The channel was created on May 18, 2009 and, as of February 2014, it boasts just under 23,000 subscribers and over 4.5 million views. Upon viewing Ribeiro's channel, one will notice that the channel almost solely consists of various pops tunes (ranging from Daft Punk's "Get Lucky" to the theme from The Legend of Zelda video game series) all arranged for orchestra. Unfortunately, Ribeiro has no orchestra of his own, so what ends up playing his arrangements is high-end orchestra sampling software that Ribeiro simply pumps his arrangements into. Ribeiro has also uploaded some of his original orchestral works but they are not nearly as popular as his arrangements. His arrangements gained him a lot of popularity and he has been featured on perezhilton.com, The Wall Street Journal, Tosh.O, CBS, and numerous times on various internet blogs. Needless to say,Ribeiro has gotten many people outside the classical tradition to listen to orchestral music (even if it is ultimately generated by software). From time to time, Ribeiro will put in quotations of other works inside his arrangements; for example. in his arrangement of LMFAO's "Party Rock Anthem" he put in a quote of Beethoven's "Für Elise." Ribeiro most recent video is an orchestral arrangement of Lady Gaga's "Applause." This video shows that Ribeiro is taking a larger interest in the presentation of his videos as he a silhouette of him is seen "conducting" the music while the actual notation of some of the parts scroll across the screen. It can be debated if what Ribeiro is doing is beneficial or detrimental to orchestral music as a whole, but it is definitely has brought the orchestral sound to more ears who would have not heard it otherwise.
YouTube - https://www.youtube.com/user/ForOrchestra
Website - http://fororchestra.com/