Aha! I thought it looked familiar. I was recently watching the US PBS version of Antiques Roadshow and a guy had a paining of that very peak.
Really nice photos - makes me want to don my walking boots.
Its a real butt kicker and pretty scary. I have never made it to the top of Half Dome but I did manage the Vernal and Nevada falls which is part of the way up. The peak was closed due to snow.
My Brother and his wife did the peak one time and said it is slipery with a sheer slope wih a few rough steps and a chain to hold on to. If you slip then you will probably slide right over the edge. It is definately a once in a lifetime experience.
There are plenty of other great Hikes around there as well