A friend of mine recently got hold of a Microsoft Surface Pro tablet and he let me have a play on it for a couple of hours. So, I installed Mathematica 9 and ran the benchmark. A screenshot of the result is below with the Surface’s result in blue. Not bad for a tablet!
Touch controlled Manipulates were a lot of fun too. If only I could run such things on my iPad as appeared to be promised in http://blog.wolfram.com/2012/02/17/a-preview-of-cdf-on-ipad/