I’m currently binge watching the first five seasons of YS on All4. I’m really enjoying it but overall prefer TBBT.
I think the casting in both is excellent with a couple of exceptions. My favourite characters from YS are Missy and Meemaw. And from TBBT, it’s Amy and Howard. A grown-up Missy appears in TBBT as does an obviously older Meemaw, and they’re my exceptions. Neither feel nor look right to me.
My favourite scenes from TBBT all involve Amy, my absolute being “Put it on me, put it on me, put it on me” and the episode where Sheldon “punishes” her for pretending to be ill for longer than she actually was. Perfect comic timing by her.