Gamer and nerdy musician Stephen Minton AKA Smint, who I heard for the first time via awesome podcast/radio show One Life Left, has released several of his songs inspired by video games on his website. Check it out for some original tunes about some of Smint's favorite games at one point in time, his piano fronted overview of Halo 1 and 2 (which for not even liking Halo, is my favorite song by him!), and his experience with a certain red ring.
All the songs are available for free in OGG and MP3 formats, and are worth a listen for a good laugh and some catchy tunes!