Leonardo DiCaprio's head

Leonardo DiCaprio, not to be confused with Leonardo Da Vinci, was an actor in the 20th and 21st century. In the 31st century, he exists as a head in a jar. His head was used to christen the Titanic in 3000. Fry apparently liked his work in the movie "Titanic" but not so much "The Beach" (although unknown to him, he was actually talking to Leonardo Da Vinci)

Quotes
Fry: It's an honour to meet you Leonardo, and may I say, you were great in Titanic. The Beach... ehhh Professor: That was Leonardo DiCaprio you blockhead!

Appearances

 * mentioned
 * mentioned