Perhaps one of the most notable areas where people are likely to come across Roman numerals is in TV and film credits, where the convention is not to spell out what year something was made.
It is a convention which has extended even to BBC News Online - witness the MMII at the bottom of this page.
The practice is believed to have started in an attempt to disguise the age of films or television programmes. In other words, the opposite of claiming an undeserved antiquity.
Can anyone explain why films & TV programs use Roman numerals at the end of the credits, alongside the copyright info?