Film posters with illustrations

When I had the idea of hand drawing my final poster, although it was an interesting one, I was worried it wouldn't look as professional as it would if I were to use an actual photograph. 

However, I did some further research and found out that there are numerous films within a variety of genres that use illustrations as part of their posters. Some of these films include, Forgetting Sarah Marshall and Beautiful Losers, which are both quiet successful films and the illustration included works very well with both the themes and ideas of the film.  

(collage created on www.picmonkey.com)