There are 'flash mob' videos all over the place, but none like this one. If the holidays get you down, this video will bring you right back to the spirit of the season. Watch as these seniors in a Lawrence, Kansas Target store put together a little 'flash mob' to 'Last Christmas' from Glee. Their timing is a little off, but the woman with the walker is just great, they honestly seem to enjoy themselves. If this one doesn't make you smile, you're a Scrooge, enjoy.