When Gordon Brown paid a visit to DC recently there was an exchange of gifts (from here):

For his part, PM Brown gave two symbolic gifts and one that expressed national pride. Brown came bearing a pen holder carved from the timbers of the sister ship of that which gave the wood to create the famous "Resolute Desk," the desk that has been in America's charge since 1880. He also gave Obama the framed commission for that famous ship, the HMS Resolute. His third gift was a seven-volume biography of one of England's greatest leaders, Winston Churchill.

So, what did President Obama give the British PM? 25 movies on DVD.

Another account mentions that they were "a box set of 25 DVDs selected by the American Film Institute."

I wonder if it was taken into account that DVDs from North America aren't playable in Europe and visa-versa.