Raspberry Pi sounds really exciting. I'm thrilled about the low price point but what I'm most interested in is the possibility of replacing my media PC with it.
My media PC is essentially a 2.8 GHz AMD something-or-other with Nvidia graphics and pulls something like 50W idling on XP desktop, closer to 150W when playing a 1080p video. Problem is, it's noisy, as it needs to stay cool. 150W has to go somewhere so it sounds like a jet engine in the front room.
And yet the Pi pulls just 1.5W (300mA @ 5V) playing 1080p and basic games? That's amazing, a factor of 100x less. Though the 5V adapter I'll use probably isn't very efficient, it's still a lot less energy.
So, I would like to replace or supplement my current media PC with a Model B Raspberry Pi. It has everything I want except one thing, which is surround sound outputs - it looks like it only supports line level stereo? This isn't a big deal, as I can probably get it working with an external USB sound card or live with stereo.
There is the potential of attaching drives to it, including a 1TB disk for media, a DVD+/-RW for playback and archiving, and the 4GB SD card for the OS.
What could possibly go wrong? Any pitfalls? How difficult would it be to get the Pi to run desktop Ubuntu? Would it be fast? What about Flash and YouTube - should I forget about these, as they can't even perform well on a 2.8 GHz x64 processor, why should they work on a 700 MHz ARM?!