While playing Warcraft III the other day, I happened to end up in a few games with mostly Germans in them. But seeing things like: 'du musst uns ownen' just cracked me up. I'm used to seeing English loaned all over the place, but now I'm saying things like 'du bist geownt!' in my head.
I've also seen 'schoolen', 'killen', and the like. I really should start cataloguing these.