In Japan, if an anime is very popular, it is really common to have it on the big screen. There are lots of examples here such as Doraemon, Detective Conan, and Gundam, etc. Although, it has been more and more common that some American comic heroes can now be seen in many films like ironman, but it is quite different from that in Japan. Japanese Anime films usually still present as animation, while Americans prefer their heroes being acted by films stars.
Detective Conan---From manga to anime film.