Actually, I think it's a pretty good idea to learn the accent that way... the same as when I wanted to learn how to use Cyrillic letters, I practiced by writing English words in Cyrillic spelling- and that was quite helpful. So I do really like listening to Russians speak English with a heavy accent, because it helps me get used to the pronunciation, without having to concentrate so much on trying to understand exactly what it is they are saying. For this reason I occasionally practice speaking my own English just with a faux Russian accent- that way it's easier to 'wrap my mind around' how pronunciation works. This method has its faults, of course, but it does help me a little.