A global temperature trend data set based on satellite data that I consider reliable is maintained at:

http://www.drroyspencer.com/latest-global-temperatures/

The data goes back to 1978. The last 6 months or so look like a particularly high variance, low trend period, which leaves me thinking that when the variance dies down, we may see a significant shift in the 5-10 year trend line.

The guy has been a skeptic, but has accepted that his data shows a warming trend, though on the lowest end of the UN commission's estimated ranges, coming in at about 0.13C per decade.