Fillion's weight has been mentioned recently and it certainly showed with this episode. I think it's just genetics. He's got the kind of build where he's always going to have to watch his weight or he could eventually turn into a Marlon Brando twin.
Nice to see "Sir" become somewhat more humanized. Noticed she's been in the credits recently, but unless I missed something, seems like she wasn't part of many episodes.
Glad they toned her down and made her somewhat more likeable.
Unless I'm mistaken, didn't Kate let it slip a few months ago...