My dad really enjoys this series so I was looking for other movies that he might enjoy. What do you recommend? I'm not just looking for similar movies (like Master and Commander) but other movies that fans of the series also like.
You would most likely enjoy the A&E TV production "Shackleton" about the true and adventurous story of the Arctic explorer. In some ways a bit like hornblower, with the shame impressive production values and really good acting. Great movie, check it out if you can find it.
Without a doubt Sharpe is a good choice. I don't know anyone who likes Hornblower that doesn't like Sharpe. But if you're looking for movies that deal with the Royal Navy I'd also recommend Longitude.
Here is a list of our favorite "masculine" adventures:
The Sharpe series of films is excellent; stories about a unit of riflemen during the Napolenoic Wars. There are more than a dozen films in the series, including a new release in 2006. Link to first film of the series: http://www.imdb.com/title/tt0108108/
The Scarlet Pimpernel: a series of 3 films (there is also a second series available in the UK) about an English nobleman who is a spy during the French Revolution. http://www.imdb.com/title/tt0182408/
Captain Horatio Hornblower R.N.- this film is from the 1950's. The script was written/adapted by Forester himself; stars Gregory Peck as Hornblower. Most fans of the recent series also enjoy this film. http://www.imdb.com/title/tt0043379/
Agree with the previous list, but would add The Onedin Line, Danger UXB, Family at War, Town Like Alice, Testament of Youth and Tenko (the latter has more women, but it does concern the other side of war). Try to find the original BBC Last of the Mohicans. The movie one doesn't do justice to the novel. You might try the First Churchills, too. The Last Place on Earth (about Scott's hopeless trek to the Pole) is also excellent.