New user - my experience
I have a NAS (Netgear ReadyNAS ultra) that I store my media, and have also recently installed the Plex Media Server on it.
The inbuilt DLNA on the NAS, and Plex itself are happily accessible on my PS3, but obviously I'm limited to the XMB interface, which isn't particularly rich.
So, I started running XBMC on my Mac laptop plugged into the TV, but it seems like overkill, plus I couldn't get that controlled by my iPhone (remote controlling what played on my TV), and didn't really want a keyboard and mouse on my coffee table.
So I thought a Raspberry Pi attached to my TV could be a good way of getting a good media library showing up.
Getting the SD card image was easy using the windows installer, and it happily booted up into the window. I plugged a wireless keyboard into it to complete the wizard. It automatically found the Plex Server without me typing anything at all and started indexing.
My TV remote (Panasonic plasma 2008 model 46PZ85) happily controlled the interface, but I did notice the screen layout didnt seem to fit the TV well, the edges carried on off the screen. Not sure how to fix that.
The navigation was a little sluggish, but usable.
I loved the iPhone control of the display, so I can control it from the app and choose what plays on the TV. It did seem a little flaky though and for some reason would suddenly stop 'seeing' the server.
I'd like to configure the RasPlex to access my media when I'm at a friends house, but am struggling to get access when not on my WiFi - I'm sure I've opened the right port on my router....
Anyway, I'll play with it a bit more and see how I go.
Looks great so far