Having been unable to climb up off my psionic plateu, and being eager to have some kind of external, non-subjective record of my acheivements (if any), I've dug up this site that I was playing with a bit last year. It has a number of retropsychokinetic games you can play, which also function as experiments. If you so choose, you can have your results included on their database. I'm going to try and do a little every day (mostly using the bell-curve game), see how I get on.
The RetroPsychoKinesis Project