Ed Hawkins, a climatologist at Reading University, has written a short blog post reporting a comparison he has done of climate model output to data. He specifically addressing the question of the Arctic temperatures, which I mentioned in yesterday's post, masking the model output so as to exclude the Arctic and thus giving an apples-to-apples basis for the comparison.
The models used are the CMIP5 ensemble, which I think I'm right in saying is very recent - within the last year or two. I would be interested in seeing some AR4-era model runs and checking how these panned out against the same temperature data.