Dreams in Cinema

I wanted to do some research into how dreams are represented in cinema as the brief mentions cinematography.

I watched:

• Inception (2010) directed by Christopher Nolan

• Disney's Alice in Wonderland (1951) directed by Clyde Geronimi, Wilfred Jackson and Hamilton Luske

• Vanilla Sky (2001) directed by Cameron Crowe

I plan to watch more films but so far I have gathered that movies about films are either really confusing and require a lot of concentrating / multiple watches to understand; or they are really weird and require a lot of concentrating to understand.