Commercial Breaks & Beats

i just saw an episode of scrubs where there is a singer from 'men at work' featuring throughout the episode on a guitar. Does anyone know the song he is singing, it is quite mellow.

I've had a look on google and have only come up with this link http://www.visit4info.com/Restricted.cf ... adid=27423 to view the ad but as it is old you have to pay. It may be the only way of identifying the song unless you know any of the lyrics.