And Claire Danes has revealed in a sexy new shoot with Interview magazine that she feels a 'euphoria' when playing the character on-screen.
'It was exhausting but also exhilarating,' the 34-year-old reveals about playing the bi-polar character's wildest moments.
'I had just come out of my mommy cocoon and my cushy, mushy love planet. So entering that mania at that point was not as enjoyable.'
Controversially in the interview, Claire recalls how she struggled to be 'sexy' when posing for the same magazine at just 15-years-old.
'He was like, "Um ... No." I didn't know how to give that—I hadn't had it yet, so I didn't know what it was.'
Claire - who married actor Hugh Dancy in 2009 - also spoke about how the pair help each other with learning their lines.