I haven’t checked it out yet, but I came across this today: http://www.usamemorychampionships.com/. If you scroll down the page, you’ll see the link to the software. The video was pretty neat to watch. I did notice, however, how empty the room is - too bad. I hope in time this gets better 
Another interesting and related site: http://www.memoriad.com/. There’s also a free training book there. Again, I haven’t yet checked it out. If you do, please give your feedback. The accommodations for this year’s event look beautiful, even if the prize money isn’t that large still. And if you’re up for the challenge, you can test yourself here: http://www.memoriad.com/exerciese.asp.
And here’s the world championship link: http://www.worldmemorychampionships.com/. Notice the world records broken for the kids and juniors divisions. nice.
clip of the first winner who happened to win 7 other years too: http://www.youtube.com/watch?v=YZfwvHgo1Kw