Boxee may cost more (about $200) but there may be a few reasons it's better then the WD Live:
- Very slick interface - Similar to XBMC ->
http://xbmc.org/ - Free remote control apps for iphone, etc. - so you don't have to have your TV on to control the unit
- Like XBMC it's open source I am pretty sure
The ideal setup for me would be a mac mini server running boxee - but thats a little expensive at about $850 refurb price on Apple's web site.