Redbox is the best - you can rent DVDs for $1 a night with no membership fees! You should try it out. If you click on my link and it's your first time renting online, they'll give you a free one-night online rental credit. And I'll get a free rental each time you rent via my link through 3/17/11.
http://redbox.tellapal.com/a/clk/MKKxR