Today I discovered Pim Pam Pum's Flickr toys.
Memry is my favorite because it takes me back to my childhood days. My family used to play Memory ALL the time.
Basically you enter a tag into the page, and then Memry pulls up Flickr pictures with that tag as the 'tiles' for your game of Memory. You click on a tile, and it flips over to show the picture so you can match it.
Exercise for your brain, pretty things to look at for your eyes. Win-win. And it's free, of course... so win-win-win. Click here to play.