Shakespeare meets Dr. Who
This beats all the Gilbert and Sullivan references on Star Trek:
“Russell T. Davies, executive producer of the BBC’s hit SF drama Doctor Who, told SCI FI Wire that the show’s upcoming third season will again introduce a famous character from British history, in this case the author of Hamlet and King Lear. “William Shakespeare [played by Dean Lennox Kelly] is going to be in one of the episodes,” Davies revealed in an interview in London.”