Let the hive mind of Engadget get that for you.
"I own an iPhone 3G and I'm looking for a decent speaker / alarm clock for it. I am going to listen music in a mid-sized room, so I want nice quality speakers with solid bass. I also want to use it as an alarm clock, so it would be great if there is such a feature. The price can be low-mid to mid-high range. I was looking at the Klipsch iGroove SXT; it's powerful, slick and the reviews are good, but it doesn't have an alarm clock feature. It's no deal breaker if I can set it up from the iPhone, but I'm not sure. Thanks!"
See http://www.youtube.com/watch?v=lp2ZLlNkmig
It's a clean XP SP3 install on a HP 2133 with 1.6GHz processor and 2GB of RAM). The USB DVB-T stick is an uber-cheapy and it forces the PC to do almost all of the work. As you'll see in the video, the MiniNote barely breaks a sweat for SD playback and copes with true HD (1080) streams without a drama.