It's SNOWING today ! Are you EXERCISING?

As the weather turns chillier, we have a lot of excuses not to exercise. I'd be making excuses myself if I didn't have a computer. 
Recently I started watching videos on www.youtube.com. I've been rocking to some aerobic exercise videos. A couple that I found easy to follow and fairly fun are:

http://www.youtube.com/watch?v=Tri2iLq0L_o (a warm up)

http://www.youtube.com/watch?v=1rfuNK1_ipk&feature=related (a little more dance)

These may not be your taste, but surely you can find something. Youtube is huge- there has to be something that would tickle your fancy and your heart muscle. Go for it!