Rauch admits "I was in this dilemma of, 'Do I let her know now that I am a super fan?' I have pictures of me as Blossom for Halloween as a kid, I knew the whole dance." Related: Night Court's John ...

I was just pinching myself that we were getting to work together," Rauch tells PEOPLE while Bialik, who plays a heightened version of herself, teases that the Jan. 14 episode includes an "elaborate tw ...