Dr. Christian Troy (I assume he's a doctor - after all, he's a cosmetic surgeon) gets a check up and lo' and behold Hot Space's 'Body Language' is played in the back ground.
According to niptuckfans.com it features when Christian and Dr. Monica are at his 2nd rhinoplasty consult where she also suggests liposuction and Restilin for his mouth lines/Christian tries to seduce her.
So now you know.
Shine on, you crazy diamonds.