Check out the SparkPeople's "Spark Your Body" Boot Camp Challenge. Check out this post from Nicole Nichols to learn more about this opportunity at http://tinyurl.com/ykvgtzn.
It started a few days ago, but find out if you can still get in on customized workouts each week along with video demonstrations. There's also a chance to win prizes including ipod products.
This just might be the new year's "spark" you've been seeking.