Simple enough. If you get a song stuck in your head for the better part of a day, post it here. Explain why you think it refused to leave if you like.
It's strange. I don't find the Game Grumps entertaining at all and I can't stand most of EgoRaptor's videos (Sequelitis has its moments), but I like Starbomb and Ninja Sex Party. The first time I heard Luigi's Ballad, I wanted to listen to it over-and-over for hours. Part of it is that Ninja Brian's music is quality work, so it sounds like something bigger than a collection of funny raps about video games. A few days ago, I heard Hero of Rhyme and it blew me away. The premise is funny, EgoRaptor has impressive rhythm and lyrics, and the music itself effectively alternates between funky and climactic. For those reasons, it's been running off and on in head for the last day or so. Okay. If you're going to be stuck with a song, it might as well be a good one.