"This movie was built with data collected during the 147-minute plunge through Titan's thick orange-brown atmosphere to a soft sandy riverbed by the European Space Agency’s Huygens Descent Imager/Spectral Radiometer on Jan. 14, 2005."

NASA article

Although just a computer animation, it is based on the actual data from the radiometer. If you have time, download this high resolution version of the movie [91 MB] instead. It is rather impressive.