grey's anatomy... and broadway??

what does a medical tv drama that takes place in seattle have anything to do with broadway? grey's anatomy is really attracting a lot of broadway stars to its ranks on tv. it's a good way for broadway people to get tv exposure, i suppose. some smaller broadway players got roles as main characters, but some bigger broadway names are getting smaller roles on grey's anatomy - like sara ramirez, who won the tony for her role in spamalot who plays george's busty orthopaedic surgeon girlfriend, and now, my favorite, michael arden! he plays a funny character not too much unlike himself. ;) watching him interact with sandra oh is hilarious.