Although, I might want to add, fun and funny have slightly different connotations. "Fun" refers more to entertainment, amusement, enjoyment, while "funny" refers more to something ridiculous, something risible, or something strange, i.e. something that is anormal (but in a rather positive sense, or at least noteworthy anormal because it somehow violates the common sense of (expected) seriousness).

I cannot explain better, I am not a native speaker myself. orz