I think they missed the mark on this one, given that all the characters in the show frequently interact with female scientists. Starting with Leslie Winkler in the early run of the show and continuing with Amy/Bernadette today. I don't think the episode was that out of place though if it was just portraying three…

He also pre-mature ejaculated upon Penny trying to put a condom on him…I think that'd be out of character for the version of the story where Raj really is gay.

I think the rest of the relationships passing up Leonard/Penny is a fairly realisitc scenario.

I think there are additional ratings forces at play with TBBT.  I know I started watching the show (syndication only at first) when it was recommended to me by a few of my friends.  All of us are engineers, and none of us would traditionally watch sitcoms.  We were the crowd that got pissed when the History Channel…