Level creators tend to hang with the PC crowd.  It's rare to find their inclusion in console gaming however after LittleBigPlanet, I think the rules have changed.  One of the main reasons I picked up FarCry 2 and Unreal Tournament III was to have the ability to experiment with mods.  Hell, Uncharted even comes with a fully robust Machinima tool.  Can't wait to get my hands on that this Friday.  Lucas Arts and Traveller's Tales are really onto something with the level creator they're including in Lego Indiana Jones 2.  Personally, I'm not a fan of the series or Indiana Jones but to see the dev team putting focus on this feature puts a huge smile on my face.  Comparing this to what I had as a kid in Excitebike and the imagination kids have these days, no wonder kids are fat.