What's Wrong with BoardGameGeek's Game Rankings?

Humor me for a moment.

Take a look at the following IMDB page, where it details the top 100 films.

The Top 250 Films according to IMDB users

Done? Okay, now here's a link to one of many video game user database sites, where they track similar ratings.

The Top 100 Games according to RF Generation users

Notice anything? For the most part, even if you're not a fan of cinema or video games, you've heard of many or most of these titles. Everyone knows who Mario is, or Sonic, or has certainly seen the controversial news stories about Grand Theft Auto. Even if someone has never seen the Godfather, they've certainly heard of it. Sure, there are a few oddities sprinkled in here and there on both lists, but many of them are a part of the public conciousness. My aunt, who has never seen Fight Club, knows about the phrase "You Do Not Talk About Fight Club."