The Japan international became the 10th player from outside Britain and Ireland to hit a treble for the club.
So this week's trivia question was:
Can you name the other nine overseas players to net a hat-trick for United?
Check out the answers in the black box and look out for another poser next Thursday.
Dimitar Berbatov (Bulgaria)
Andrei Kanchelskis (Ukraine)
Jesper Olsen (Denmark)
Cristiano Ronaldo (Portugal)
Ole Gunnar Solskjaer (Norway)
Carlos Tevez (Argentina)
Ruud van Nistelrooy (Netherlands)
Robin van Persie (Netherlands)
Dwight Yorke (Trinidad & Tobago)