The title says it all. The contents starts... now! And ends in 24 hours (6:30pm GMT-5/Eastern Standard Time) and the last one to post wins. The prize is basically a pat on the back for yourself. (Subject to forum regulations, remember)
HD-DVD is my choice. Sony is killing Blu-Ray with the PS3. They committed to putting a Blu-Ray player in every PS3 before they could ramp up production for the blue laser diode. This kept PS3 numbers low and the cost of other Blu-Ray players high.
Aside from that, Sony has pissed me off too many times in the last few years for me to buy any of their products. They screwed up EverQuest, they sold me a PC with a laundry list of problems and they put rootkits on their CDs.
HD-DVD is cheap to produce and has the porn industry behind it. The biggest obstacles to mainstream HD-DVD adoption are the doubts about a format war and the specter of downloads replacing the VHS/DVD purchase/rental market models.