If you are a func regular, then you will have noticed Daz posting about his playthroughs of custom maps: https://www.youtube.com/playlist?list=PLB827907AD18E9966
And then there is galleyuk with his http://www.galleyuk.net/ and playthroughs of commercial releases (currently playing Q!Zone, my condolences…): https://www.youtube.com/user/galleyuk
Enjoy!