It's tough to describe without going into a tirade and listing off all these moments in a bunch of movies. It started back in Transformers if I recall. But it really caught on and no new movie seems complete without the:
"Deadly serious moment>JOKE>TheBigBangTheoryLAUGHTRACK.MP3" formula.
I'm just struggling to use a simple phrase/director name or something of the likes that let people know what I mean immediately by these forced jokes in serious moments.