Melissa Tang was first seen as the marine biologist Mandy Chow on The Big Bang Theory. She then followed this up by appearing as Ms. Fenley on Young Sheldon and was finally seen as the mom, Jackie, on ...

Melissa Tang was brought back in Young Sheldon playing an entirely different character in Ms. Fenley, the music teacher at ...

She was then invited to play the role of Nurse Robinson in the first two seasons of "Young Sheldon." Melissa Tang also got invited to appear in the spin-off, playing string musician Ms. Fenley.

TVLine is taking stock of Young Sheldon’s many nods, cameos and crossovers with its predecessor, The Big Bang Theory. First ...