I am extremely disappointed to find so many list questions marked [closed]. I don't think subjectivity is a reason to close a question. Sure, a question like "What is the best game of all time?" is more of a poll than a question to be answered, but I would LOVE to see such a question linger, with all the discussion it would generate, and seeing the games that the most people vote on float to the top.
Would that sort of thing really hurt the site?
I think there is also hypocrisy at work here in stating that there are other places to find lists of games, but the fact that there are other places for game questions (cough gamefaqs) is no big deal. Of course there are other places! But to make this site successful, I think you want to encourage community by allowing some amount of subjectivity in the door.
To be fair, I am disappointed that Stack Overflow also seems to have this policy. Finding the What's your favorite programmer cartoon was one of the only reasons I returned to Stack Overflow with any regularity in the beginning. Now of course it's an indispensable resource... but it certainly wouldn't have become that without a strong community. And it never felt to me that subjective questions detracted from the questions with good answers.