Hansen's global temperature projections, particularly the ones he made in 1988, are not particularly great. The below picture is from a 2009 Real Climate post on that claim.

Key mistake in his 1988 estimates was using a higher climate sensitivity. With the current uptick in global temperatures last year, we're back into Hansen's scenario C, but just barely.

What always frustrates me in this particular topic that's beaten to death, particularly on sceptic websites, is that I can't seem to find a graph like this with standard deviations added. And of course Hansen has made other projections since.

Yet, at first glance, the temperature records are indicating so far that Hansen's 1988 projections weren't too good.