 The fictional character served as a love interest for surgical fellow Cristina Yang , and had an unstable personality when first introduced , suffering from PTSD . McKidd 's connection with fellow actress Sandra Oh ( Cristina Yang ) has been acclaimed amongst critics , with Matt Roush of TV Guide calling the " instant sparks " between McKidd and Oh " electrifying " . McKidd was nominated for two awards for his work on the show , winning one of them . Chris Monfette of IGN has praised the addition of " fresh , new characters " such as Owen Hunt . 
