Is Personality Enough For A Game?

I buy a lot of games. Now I think I'm more of a impulse buyer then an addicted gamer but that's a debate for my friends and family. Once such impulse purchase happend over the weekend.
So I'm at the evil empire ( aka Walmart ) picking up a few of the necessities of human survival. You know, like cheetoes, and of course no visit is complete without a quick flyby of the eletronics department. That's when I see this little psychopath leering at me though the glass of the game cabinet. Well how do you like that. The Xbox 360 version of Rayman: Raving Rabbids is in. Living in a remote area where I still haven't been able to snatch a Wii for myself I say what the hell and pick it up.
The game is great and it's a lot of fun. But here's the thing. As far as being a game goes it's barely average. A bunch of mini-games that I'm sure we have all played before in other games and graphics that are serviceable but nothing to show off when your non-gaming friends are over.
What really stands out is the games presentation and personality. It's weird, its quarky, it's funny, and it generally just seems to put a smile on my face. I'd usually be all over a game like this for it's flaws and repetitiveness but I just can't bring myself to do it.
Or maybe I'm just afraid to hate on it for fear of the Rabbids coming to get me!!!