BBC Olympics Content Usability
The BBC's mobile Olympics page uses an adaptive mobile design to work across a wide range of mobile devices. (Read More...)
ESPN Olympics Content Usability
My favorite general mobile sports site, ESPN, has lots of Olympics coverage including news, schedules, results, a medal tracker, athletes bios, and (Read More...)
NBC Olympics Content Usability
NBC has the exclusive television broadcast rights for the Olympics in the US. (Read More...)
Sky Sports Olympics Content Usability
British independent TV network Sky's Olympics page has Games news, complete results by day and sport as well as the entire Olympics event schedule by sport.
Usability 
