[ChrisMac]

For me it's the comfort factor. I stream Netflix through my Wii, so when I watch movies that way I get to sit on my couch and watch my big screen TV.

When I watch stuff on my computer I have to sit in my uncomfortable desk chair and view my small-ish monitor. Getting my whole computer hooked up to my TV seems like a hassle at the moment. On the other hand, Netflix is always ready to go and that usually wins.

[dangrossman]

There are many devices cheaper than a Wii that will stream video over a network, allowing you to watch your downloaded movies without connecting the computer directly to a TV.

[gedekran]

Exactly. I have a WDTV Live Plus that allows me to stream netflix and other services. Also watch any HD movie or tv show downloaded from the internet or a local drive/NAS. There are many such affordable devices out there offering that ability.