'This Is Spinal Tap' has been voted the greatest movie comedy of all time.
The 1984 cult mockumentary - which was directed by Rob Reiner and featured a cast of unknowns playing a spoof band who made much of The Script up on the spot - beat 'Airplane!' into second place in a poll by Time Out magazine.
Time Out critic David Jenkins said: "It's sublimely funny and sharp - a comedy built for the long haul which matures with each viewing. It's so perfectly constructed and performed, the characters so rich and realistic, that it's initially a challenge to determine the dividing line between reality and fiction."
When 'Spinal Tap' was released some viewers were convinced the fake group - which had a tendency to lose drummers in increasingly more bizarre accidents - were a genuine band.
'Monty Python's Life of Brian' came third while 'Annie Hall', 'Monty Python and the Holy Grail' and 'Withnail And I' also featured in the top 10.
Voters taking part in the poll included 'Ghostbusters' star Dan Aykroyd, 'Shaun Of The Dead' director Edgar Wright and 'The Office' co-creator Stephen Merchant.
Time Out's Top Ten comedy films:
1. 'This Is Spinal Tap'
3. 'Monty Python's Life of Brian'
4. 'Annie Hall'
5. 'Monty Python and the Holy Grail'
6. 'Anchorman: The Legend of Ron Burgundy'
7. 'Withnail and I'
8. 'Groundhog Day'
9. 'Some Like It Hot'
10. 'The Jerk'