D&D 4th Edition -- particularly the Player's Handbook -- taken a lot of criticism for being 99% crunch, and 1% fluff. It's also taken hits for the gutting of many of the role-playing aspects from earlier editions, including skills like craft, profession, and perform.

All of this is true, but 4E's saving grace is the Dungeon Master's Guide which provides much of the framework for supporting role-playing that the PHB is lacking. Now it's a legitimate complaint that this is putting almost all of the role-playing heavy lifting on the DM's shoulders, but in truth, I suspect that's where it lies in a good many campaigns.

One of the DMG's better ideas is the Skill Challenge.