I got one of those Roku Netflix boxes, and I think it is the best $100 I've spent in a LONG time.
One question, though: How do you get your internet? Here in Comcast country, if you use a cable modem but DON'T subscribe to TV, they charge you an extra $12 a month or some BS like that... Their most basic cable package is only $15, so it almost makes sense to do it that way.
On the other hand, the slowest DSL is just a little bit too slow to use with the Roku box. It works, but you get their most-compressed video, which is nearly unwatchable.