"Casablanca" has topped a list of movies all real film fans should watch.

The tear-jerking war romance heads a list of classics, drawn up by Britain's Radio Times magazine as a "Film Buff's Guide."

The list also includes 1967 crime romance "Bonnie and Clyde," cult classic "Pulp Fiction," and nine-hour Holocaust documentary "Shoah."

Despite the list featuring a number of box office flops - including the biggest disaster in cinema history, the 1980 anti-western "Heaven's Gate" - the author of the list, Radio Times film editor Andrew Collins, has defended his peculiar choice of entries.

He said: "Snobbery does not belong to the film buff."

He also pointed out that, to truly reflect on the greatest cinema of all time, it is essential to include screen masterpieces from all times and genres.

He said: "To understand the 80s and 90s blockbuster, you must accept 'Armageddon' producer Jerry Bruckheimer into your life. 'Armageddon' is the pinnacle of Bruckheimer excess."

Other films on the list include Gene Kelly musical "Singin' In The Rain," sci-fi cult classic "Blade Runner" which stars Harrison Ford, and 1960 Italian drama "La Dolce Vita."

 Radio Times Top 25 Film Buff's films:

1. Casablanca (1942)
2. The Cabinet Of Dr Caligari (1919)
3. Blade Runner (1982)
4. A Matter Of Life And Death (1946)
5. Build My Gallows High (1947)
6. La Dolce Vita (1960)
7. High Noon (1952)
8. Rear Window (1954)
9. The Hidden Fortress (1958)
10. Bonnie And Clyde (1967)
11. Bringing Up Baby (1938)
12. The Hills Have Eyes (1977)
13. Un Chien Andalou (1928)
14. Armageddon (1998)
15. Heaven's Gate (1980)
16. Annie Hall (1977)
17. Singin' In The Rain (1952)
18. Paths Of Glory (1957)
19. Performance (1970)
20. The Bride Of Frankenstein (1935)
21. Blackboards (2002)
22. The Day the Earth Stood Still (1951)
23. Pulp Fiction (1994)
24. Shoah (1985)
25. Winter Light (1962)

Editor: Donald