This was a list published by Empire magazine in 2008. Here's how they describe it:
10,000 Empire readers. 150 of Hollywood's finest and 50 key film critics voted in the most ambitious movie poll ever attempted.
Sounds like fun. I won't be actively trying to complete this list (at least not yet) but it will be interesting to see my inadvertent progress.
Feel free to also use this list as reference for your own film fun - how many have YOU seen?