Matthew Morrison has been "geeking out" on the set of 'The Good Wife'.

Matthew Morrison

Matthew Morrison

The 37-year-old actor is a huge fan of the legal drama series and is finding his knowledge of the show very useful, though he can't help but get excited when he's filming in rooms that are so familiar because he's seen them on TV so much.

Matthew - who appears on screen as attorney Conor Fox for the first time tonight (06.03.16) - admitted: "I do geek out a little bit, I have to be honest, but at the end of the day, it's such a pleasure. I feel like I know these people already, and I love that I'm a fan of the show because I know how these people interact with each other and all the relationships.

"The coolest thing for me is actually being on set and walking around. I'm like, 'Oh! There's the Florricks' apartment and there's the kitchen!' you know, seeing all the set pieces that I know so well. ... It's really cool."

But the former 'Glee' star is struggling to refer to co-star Julianna Margulies - who plays Alicia Florrick - by her real name when they're not filming.

He told 'Access Hollywood': "I have to bite my tongue to not call her Alicia when we're not filming.

"I'm like, 'Her name's Julianna, Julianna, Julianna,' because she's still Alicia Florrick to me, but I cannot praise her enough.

"She's such an amazing woman and she's actually renamed my character and everyone is calling me 'Foxy Conor' now."