Do you remember a story, where Addison and Derek had just broken up. Addie met a guy named Parker I believe. He was a chemist and worked on polymer tires. He had an accident in his lab and his assistant sent him to the hospital where Derek figured out they knew each other and she Parker, Callie,and George all went out to dinner. But George and Parker were waiting for the girls in the lobby when Derek and Mereidth showed up.

Thanks,

Kels