brentalfloss is a musician who puts lyric to retro-game music, like Punch-Out!!, Zelda, Final Fantasy etc with hilarious results. There is a high probability you will sing-along with him. He is hosted on ScrewAttack and is awesome. And yes, his name is spelt with a lower case b.
Sample brentalfloss lyrics
''Shapes made of four coloured blocks, like a T or a box, come down like falling bricks' (Tetris)
'I, am Mega Man! I got a motherfucking gun for a hand!' (Mega Man 3's opening music)