Netflix is now offering unlimited rentals (3 out at a time) for $18 a month. Plus, they have a 2-week free trial for new customers.
Blockbuster.com is now offering unlimited rentals (3 out at a time) for $10 during the first month, and $17.99 a month thereafter. Plus, they give a free in-store rental (even video games). Blockbsuter allows you to return your online DVDs to a physical store and exchange it for an in-store rental. The DVD rental is flagged as checked-in, and they process the next DVD in your online queue.