Cartridge tilting Source Games (Playing Source games on a USB drive - then unplugging it)

So.. I saw Juko's video ( • Running Portal on a US... ) about this topic, and I got interested into doing this kind of thing too. Go check his video out if you haven't, it's pretty entertaining.
Games tested: Left 4 Dead, Left 4 Dead 2, Portal, Garry's Mod\
Music used: Portal - Self Esteem Fund, Portal - Android Hell, Left 4 Dead - Train to Miami, Portal 2 - There She Is
Thank you ‪@_.aurora._‬ for the SFM video in the beginning