Hindsight can be a wonderful thing – as much-loved movies including Citizen Kane, The Shawshank Redemption and Blade Runner have proved

TLDR

10 The Shawshank Redemption (1994)

Budget: £19.3m. Worldwide gross: £22m

9 Willy Wonka and the Chocolate Factory (1971)

Budget: £2.3m**. Worldwide gross:** £3.2m

8 Strange Days (1995)

Budget: £32.3m. Worldwide gross: £13.1m

7. The Thing (1982)

Budget: £12m**. Worldwide gross: £15.9m**

6. Donnie Darko (2001)

Budget: £3.5m**. Initial US gross: £398,386**

5. It's a Wonderful Life (1946)

Budget: £2.45m**. Worldwide gross (approx): £2.54m**

4. Blade Runner (1982)

Budget: £21.6m**. Worldwide gross: £32.2****m**

3. Citizen Kane (1941)

Budget: £646,602**.**Recorded loss: £123,202

2. The Wizard of Oz (1939)

Budget: £2.1m**. Initial gross (approx): £2.3m**

1. Vertigo (1958)

Budget: £1.9m**.** North American gross: £2.5m