I'm guessing WAHOOOOO by the numerous gleeful posts and the fact that you actually agree to the concept of a MANDIGAN! (for the uninitiated, a Mandigan is a Man's Cardigan)
I am going to break the rules here and give four choices:
Least impressive performance in the Olympics: - incompetent judges - the "Help Me I Can't Wake Up "Dream" Team" - Whiny gymnasts like Svetlana "I really won" Khorkhina. - NBC's "USA vs. the World" coverage.
They need to take a leaf out of Australia's 7 Network's "AUS vs. the World" coverage. (They only need to move one letter after all.)
Actually the thing that irks me the most are drug cheats, who make it almost impossible to appreciate excellent peformances without a niggling doubt in the back of the mind about whether they are genuine or chemically assisted.