There were two David Jensen's that played ice hockey for the United States at the 1984 Winter Games in Sarajevo. David Allen Jensen was a winger and David Henry Jensen was a defenseman.
Technically no. The Olympics are for "amateur" atheletes, those who do not make their livelyhood by the sport they compete in.
Baseball
All of them.
wrestling
Swimming.
Basketball
Karate is not an Olympic sport.
The only sport the US does not compete in at any Summer Olympics (including 2008 and the upcoming 2012) is handball.
We have the Olympics so that athletes from all the world can come to compete in the sport they love (and hopefully win a medal:)
none, we play Cricket as our national sport, but I don't think we compete in the Olympics.
England is poor at sport
every single event from tennis to skiing