Although the results have yet to be independently verified as of February 2010, scientists at Brookhaven RHIC have tentatively claimed to have created a quark-gluon plasma with an approximate temperature of 4 trillion degrees Celsius.
As already mentioned, three new experiments running on CERN's Large Hadron Collider (LHC), on the spectrometers ALICE,ATLAS and CMS, will continue studying properties of QGP. Starting in November 2010, CERN temporarily ceased colliding protons, and began colliding lead Ions for the ALICE experiment. They were looking to create a QGP and were expected to stop December 6, colliding protons again in January. A new record breaking temperature was set by the CERN group on August, 2012 in the ranges of 5.5 trillion degrees Celcius as claimed in their Nature PR. 
The strength of the color force means that unlike the gas-like plasma, quark-gluon plasma behaves as a near-ideal Fermi liquid, although research on flow characteristics is ongoing.