1) The first consumer digital video recorder (DVR), the TiVo, was introduced in 1999 and allowed users to record and store television programs for later viewing.

2) The world's first credit card was introduced in 1950 by Diners Club.

3) The United Nations (UN) is an international organization founded in 1945 with the goal of promoting peace, security, and cooperation among nations through diplomatic and political means.

4) The musical "The Phantom of the Opera" has been running in London's West End since 1986, making it the longest-running musical in history.