A list of the Top 100 Monster Movies of All Time puts "Alien" at #1, and the original "Godzilla" at #8.  For some reason, they put the original "King Kong" all the way down at #22, while the pointless Peter Jackson remake is FIFTH.

SEE THE FULL LIST HERE

"Rolling Stone" did a similar list last summer and ranked "Godzilla" at #1. They have videos of each one, too!