Don't laugh.... but the original Xbox game, Madagascar, had some excellent minigames.
There were some mini-games unlockable from the main menu, but within the game there were (easter eggs) arcade cabinet games. One of them I remember well was a tank-based fort defense game... another one was a WW2 flyer-based blimp defense game. Anyhow they were all pretty challenging and fun.
I've played a lot of "kid" games that have built in some really fun minigames, often bowling, shuffleboard, golf, and little nostalgic nods to earlier arcade games like Frogger. I guess Wreck It Ralph echoes that spirit, too. I love Easter eggs like these. I hope with the next-gen consoles, developers will suddenly feel the urge to include more Easter eggs again, as, in my experience, the frequency of such occurrences tends to wane over time. Anyhow.. *fingers crossed*