I hit level seventy nine in Blizzard's latest World of Warcraft expansion, The Wrath of the Lich King.
Blizzard has done some really hard thinking about what it means to level in their game. Quests are easier, quicker, and seem to hand out more rewards. When you think about that in terms of a skinner box style of leveling, it's a departure from the norm. Typically, as you get higher in levels and are more invested, the rewards come more infrequently to the amount of work put in. I would say that Wrath does the opposite. Less work, more fun. That's a good sign.
The more Blizzard does to reinforce the idea that time poured into something does not denote worth, the better the game will get for the majority of players.