Worst joke I've heard on this show in a while: Ivan Reitman directing the Opening Ceremonies.
Opening Ceremonies are very easy to make fun of because they're usually so weird and pretentious. Yet The Simpsons didn't go for the easy satire --- instead, they did something that didn't work on any level.
Reitman directed Ghostbusters, so.....the countries should naturally be announced like "WHO YOU GONNA CALL? ARGENTINA!!".....well, of course, THAT makes sense. And then the joke is that he has to say "Who you gonna call" so many times that his voice wears out.
*silence*
Ranier Wolfcastle: "Zat's da joke."