Unfortunately there aren't many places where you can get new movies legally anymore. And the most popular sites all have some sort of subscription method or payment for renting certain movies. .
- Free movies on Youtube.
- Hulu.com (free) Membership
Some of my favorites like The Onion and Crackle have videos both on Youtube and on their main site.
And many of the shows and movies from Hulu and Netflix are also on Youtube.
TV and Movies on Xbox 360
You can now watch Hulu, Zune, and Netflix, with memberships; and soon Youtube for free on Xbox Live.