It is the Rosetta stone :)
Was reading up on this (on wikipedia) earlier today. Completely off topic but this made me laugh:
"In July 2003, Egypt demanded the return of the Rosetta Stone. Dr. Zahi Hawass, secretary general of the Supreme Council of Antiquities in Cairo, told the press: "If the British want to be remembered, if they want to restore their reputation, they should volunteer to return the Rosetta Stone because it is the icon of our Egyptian identity." In 2005, Hawass was negotiating for a three-month loan, with the eventual goal of a permanent return. In November 2005, the British Museum sent him a replica of the stone."
I must admit that I do agree with Dr Zahi Hawass - it shouldn't really be kept here!
To bring it back on topic I am currently listening to Fandango by ZZ Top. Great stuff.