The first Karate Kid trailer has been released. Ralph Macchio said the other day that he doesn't make a cameo in the new movie, wouldn't if offered and said the original should stand. I would agree except there were like what, two sequels to the first one that he made so, it didn't seem to bother him back in the day.
As for Knight And Day, I really thought it was going to be all action. Looking at the trailer though it looks like they are going for some kind of action comedy.