All my mom wants for Christmas is a Wii game

So, my mom just told me that she wants a Wii game for Christmas.

All she has at the moment are Wii Sports and Wii Fit. As far as I can tell, she likes both games, so she'd probably enjoy Wii Sports Resort--or one of the Wii Fit clones. Have any of you had any experience with The Biggest Loser, EA Sports Active or Your Shape and, if so, would you recommend them to an aging lady who enjoys a bit of exercise?

Note: The people in the photo above aren't my dad or my mom.

Two other possibilities, in my mind, are Just Dance or Just Dance 2, since my mom loves to shake her tail feather. Have any of you played and enjoyed either of those titles?

Finally, she likes puzzle games. She loved Tetris DS more than life itself, so Tetris Party Deluxe is a definite option--if it's any good.

Any help would be greatly appreciated! (Also, if you haven't experienced any of the above-mentioned games, feel free to name others that you think a 60-year-old woman might enjoy.)

A sign of the apocalypse? My mom is obsessed with New Super Mario Bros.

My mom has had a DS for quite some time. She isn't much of a gamer, though--at least, not in the traditional sense. Until a few days ago, for example, her favorite games were Brain Age, CrossworDS and Tetris DS.

What happened a few days ago? Well, she picked up my copy of New Super Mario Bros. and gave it a go. She's been playing it ever since. (OK, she's taken time off to eat, sleep and play some Shanghai on her computer--but other than that she's been playing New Super Mario Bros.)

I've had to help her quite a bit--by telling her what the buttons and power-ups do, etc.--but I don't mind. I'm just glad she's moving, slowly but surely, beyond her "casual gamer" comfort zone.

See also: 'On the road again'