I LOVE the Mario games.
I have Super Mario Bros 3 for gameboy advance and the New Super Mario Bros for DS and love them both. NSMB has a bunch of mini games on it that are great and SMB3 has the original Mario Bros on it.

Some other DS/GBA games that are owned/have been played with by 30+ year olds in our family and get thumbs up are:

Cooking Mama
Nintendogs
Dr. Mario
Tetris
Brain Age-all of them

In our family I have a DS and so does my mom and my sis is thinking about asking Santa for one for Christmas.

I like to keep and eye out and pick up cheap games when I find them. My most recent find was Ratatouille which is a bunch of mini games with characters from the game. Pretty fun but I figured I didn't have to really love it since it was only $5 but I've more than got my money's worth out of it.

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