Man, and I thought I was the only one left running a 210P. I haven't need or desire to attempt a Blu-Ray conversion, but my 210P has been strong for 5 years now! Holy cow! I bought it right before my first son was born and all the money goes to the kids now. lol. It's been in the same config since I started, save for that I'm using a smaller HDD since most everything is on the server downstairs.
I will say this--I have an AMD64 3400+ and an nVidia Quadro FX 1000--and I'm able to use the 210P as a MythTV frontend to display recorded or live HD from my myth box across the room. I was pretty stoked when that worked!
Keep on, SFFers. (Is the whole SFF thing dead? I too hadn't been on here in ages, nor have I seen much in the way of new SFF rigs. Shuttle still seems to crank out new ones, but any one else?)