Simple and fun word game for a party. In fact you don't even need a huge party, 2+ people is enough.
Once the game starts you will see a name of a person to describe and a letter you should start the words with. That's it! You only need to explain other players who that person is using the words starting with the given letter. The faster the better.
For example, you were lucky enough to get Neil Armstrong along with letter A. You may finish in 5 seconds by saying:
As soon as somebody shouts 'Armstrong!' you are all done and it's now other player's turn.