Recently saw a game at Nevada Smith's in NYC (great soccer bar, packed by 9AM most Saturdays).
Man Utd, Chelsea and Liverpool were all playing at the same time (10AM). Liverpool was relegated to the downstairs bar, while Chelsea got the big screen and audio for the first half, and United during the second (both were on various smaller tv's throughout).
When the Liverpool fans came up after the game, everyone started chanting GO HOME SCOUSERS! It was pretty funny.
I was there for the United-Millwall Cup Final a couple of years ago. Great craic. Especially when the Gooner fans showed up.