If nothing else, CONCACAF will have two different representatives in Beijing from the last Olympic games. Costa Rica didn't even reach this qualifying tournament while Mexico were done in by Guatemala and terrible finishing.
The U.S. missed out on the 2004 games but were in Sydney for the 2000 Olympics - likewise for Honduras. Guatemala played in the 1988 Olympics in Korea while Canada last had a chance to play in the men's soccer in 1984.
Anyway, here's Jaime Cardenas' story for the LA Times on Sunday's matches.