1. [The Phantom of the Opera (1925)](https://www.youtube.com/watch?v=nD8a0y4Yk9Q) - This is the original silent film adaptation of the novel, directed by Rupert Julian and starring Lon Chaney as the Phantom.
2. [The Phantom of the Opera (1943)](https://www.youtube.com/watch?v=nW9nU83eLqY) - This is a Technicolor adaptation directed by Arthur Lubin and starring Claude Rains as the Phantom.
3. [The Phantom of the Opera (1962)](https://www.youtube.com/watch?v=310Qm86nZq8) - This is a British adaptation directed by Terence Fisher and starring Herbert Lom as the Phantom.
4. [The Phantom of the Opera (1986)](https://www.youtube.com/watch?v=6gJ2v0wZ-g8) - This is a musical adaptation directed by Dwight H. Little and starring Robert Englund as the Phantom.
5. [The Phantom of the Opera (2004)](https://www.youtube.com/watch?v=E_07V10nZqM) - This is a musical adaptation directed by Joel Schumacher and starring Gerard Butler as the Phantom.
Please note that some of these movies may require a subscription to watch or may only be available in certain regions.