mandaric track bike, surly cross-check, no-name white frankenbike, some other frames
I just did this. no problems so far. Everything fit fine for me. The only issue is the looks, the bmx cranks are a little wider and sorta give a funky look to a streamlined fixed gear bike. Also, I think the bmx and track cranks use different chainring bolt spacing, so this might be an issue for some people.