Allegedly (according to HP labs anyway) my 15 year old software[0] was state-of-the-art at this on the CNN dataset[1].
By my thing was very heuristic based, and couldn't generate new sentences like this can. I'm pretty impressed - I'd say some of the machine generated summaries are better than the human ones.
[0] http://classifier4j.sourceforge.net/ (yes, Sourceforge! Shows how old it is!!)