There's been a bit of a Renaissance in gaming lately as developers old styles of games and revisit them in a new light. The best of these, such as Bionic Commando: Rearmed, take the solid underpinnings of the original game while updating some of the peripheral elements and presentation for a modern audience.
Some purists have taken issue that many of these game eschew traditional sprite-based graphics in favor of polygonal ones. They feel the only way to properly make a 2D game is with 2D graphics.
I wonder how those people feel about 3D Dot Game Heroes, which is a 3D game done with 2D graphics. Well, actually more like the 2D graphics are being done in 3D. Look, just look at the video to understand what I'm saying:
Crazy looking, isn't it?