The Internet Movie Database (IMDb) has released an iPhone application to enhance access to its service from the iPhone. IMDb lets iPhone users search through its entire database of movies, TV shows and celebrities, as well as access trailers, photos, U.S.-based TV and movie listings, box office results and top-ranked movies and celebrities. The IMDb app is available as a free download from the U.S. App Store; it is not yet available in other countries.…