The Big Bang Theory, Season 8, Episode 11 (December 11, 2014) -- "The Clean Room Infiltration"

If a bird gets into a clean room, that’s not the fault of Howard OR Leonard, it’s the fault of the goddamn architect of the clean room! Howard and Leonard should go yell at the university for forcing them to work with such sub standard facilities.

I’m not too crazy with that aspect of his personality, either.

Yeah, I thought that was a bit ridiculous, as well.

That’s what they get for working at a second-rate nerd school in Pasadena.

I did like the bit in which Sheldon mentioned what he liked about Amy, making it clear that he is paying attention and really loves her.