User blog comment:Jujumagia/Funniest Moments on Grimm/@comment-24399666-20160108053156

A couple of others I just thought of:

In Blond Ambition, during the wedding rehearsal, the officiator asks Nick if he plans to wear sunglasses during the wedding. Nick stammers that he has a problem with his eyes, and then suddenly everybody else chimes in with more and more details. :D

In this most recent episode, Wesen Nacht, Xavier is talking to Monroe and Rosalee and he starts to woge. Just... their reactions when they think he might. :D