"When the crew returns to Serenity after their raid of the Alliance hospital in ARIEL, Mal hugs Kaylee from behind. This was improvised by Nathan Fillion, and was left in the shot because Joss Whedon felt it such a natural movement for Mal to make.
I Love Captain Mal Reynolds! "Castle", now) If you've never seen the Firefly series, with it's culmination movie, Serenity, then you have missed out on a ton of great lines as well as an epic story. The comics pick up where the movie left off.