What are some GOOD free stuff you can get from marketplace?

You can get a very good, free game called aegis wing. It was a developers contest winner, and is very very fun if you have 2 or 3 friends who want to play it with you. Also, you can get a lot of very good and very cool videos off of the marketplace for free. There are always new online demos and free themes/gamerpics from new movies and tv shows. Microsoft makes you pay 50 dollars for a membership to live, which is really greedy, but at least they try and make it up with very limited down time and usually there are some free things on the market. Support the devs and buy new games from the marketplace, they usually put out a very fine game, and you ALWAYS get a demo with it, so at least you can try before you buy.