Rubinstein's treatment of Chopin's second piano concerto is not my favorite, although Mehta and Rubinstein deliver an outstanding performance (I am addicted to Arrau/Inbal recording on Philips). But what makes this DVD invaluable is the interview that Rubinstein gives to BBC and that shows a great man beyond the great musician.
At this point I would like to suggest that Amazon make available to region 2 another DVD centered on Rubinstein:
It is available from Amazon in the US (and it is region 1). It is very exciting, since besides the long interview with Rubinstein (with a stunning performance of Chopin's A flat polonaise Op.53), we see a rehearsal of Mendelssohn trio Op.49 performed by Rubinstein, Heifetz and Piatigorsky