A Clockwork Miracle - Radiolab

http://www.radiolab.org/blogs/radiolab-blog/2011/jun/14/clockwork-miracle/

Referee Appears Out Of Thin Air. | MilkandCookies

http://www.milkandcookies.com/link/258561/detail/
A hockey referee from the future emerges from a trans-dimensional portal in the middle of a Wings - Hawks game.

With the intergalactic cataclysm averted, the referee returns to the void.