I loved the scenes with Dr Melfi and Tony. Gives you a great insight into how Tony's mind works.
Yep, without Melfi scenes we are left with a two dimensional Tony.
You're both right.
I think it's actually 'her' i find a bit unbelievable. He gets under her skin with too much ease and as a psychiatrist she should be stronger (at times) than what she is.
I find their relationship unbelievable*
*i'm just being picky, it had to be that way.