Since I rarely watch the show and only wanted to see Kate Micucci's recurring role, I guess her, except I'm afraid no matter how gentle I'd try to be, I would break her like stage glass.
But without knowing what kind of human being everyone is and going on looks alone, I guess Sheldon and Penny are the only two I wouldn't touch with a 10 foot pole.
Yep, Kate Micucci is a doll!