I don't know if I've seen Kelly Heroes or not. I've certainly seen bits of it, 20 minutes here, half and hour there, but I don't know if I've ever sat and watched it all from start to finish. Not seen the other two and no real interest, either.
I've seen Rumble in the Bronx, very fun martial-arts movie. Always wanted to see Kelly's Heroes but haven't yet and never heard much about The Negotiator.