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Castle Season 6 Episode 20 took a trip back in time, as the entire 12th precinct was redressed as 1978, with the help of Martha Rodgers special flair.

Our TV Fanatics, Chandel Charles, Jim Garner, Robin Harry, and Christine Orlando are joined below by Teresa from The 12th a Castle Fan Forum to debate funniest moments, favorites from the decade and who had the best '70s transformation...

Which character had your favorite '70s transformation?

Chandel: Kate. Always Kate. I just love her so much, so any time she does something different it always seems perfect. Kind of want that peasant blouse.....

Jim: Lanie, hands down the best Foxy Brown I've seen in a long time.

Robin:  I have to go with Lanie.  For one, she looked AMAZING (I cannot pull off an afro!). Two, it was hilariously stereotypical and they played that off so well.

Teresa:  I liked how Ryan slowly morphed into his 70's character. When he finally bought into the 70's he was all in and bailed Espo out. And the best was the great disco moves at the end.

Christine:  Definitely Ryan. I didn't even recognize him when I first saw him. It was amazing but it made me love 2014 all the more. 

What was the funniest moment of the episode?

Chandel: Probably Gates walking back into the precinct to find it had regressed by 4 decades. Also, that her reason for returning was that the terrorism seminar was canceled due to a bomb threat----go figure! It was probably the one joke you really had to be paying attention to in order to get it and appreciate it in the midst of her "What the heck happened here?!" tirade.

Jim: I'm with Chandel on this one. Hearing Gates bellow from the crowd was the perfect "Yang" to Martha's over the top redressing of the precinct's "Yin." Both halves made for a really fun scene. 

Robin: When Esposito tried sliding across the car and fell on his behind...and then limped his way into the nightclub. I was in absolute hysterics, I loved it.

Teresa:  My husband and I were laughing out loud more than any other episode. After watching it again I was laughing the most when Castle and Beckett were reading the script parts that Martha had written for them as such non-actors overacting the parts.

Christine:  I'm with Teresa on this one. Beckett's timing being completely off when she slammed her hand on the desk really made me laugh. It was very well played. 

Were you surprised that Harold and Vince were lovers and what did you think of that twist?

Chandel: I was surprised, but it really helped tie everything back to solve the case, so I appreciated the twist for that reason. Gotta keep it fresh!

Jim: I was surprised and impressed, it was a great twist. Vince being stuck in the '70s made total sense when you realized he lost the love of his life. 

Robin: I didn't see that coming at all. I agree with Chandel, it tied the case up quite nicely, and made Harold more endearing.

Teresa:  It was a twist but a sweet one.

Christine:  Yes! I appreciated both because I never saw it coming and because of the way it tied all of the loose ends together and made sense. It was also very sweet that this actually turned out to be a love story.

Do you have any favorites from the '70s? TV shows, movies or music?

Chandel: I wasn't even born yet, so I truly have no concept of the decade or anything about it I could have liked.

Jim: Yep, for TV I was a huge 6 Million Dollar Man fan. I actually got to stay up late to watch it! As for music, Boston is still one of my all time favorites. 

Robin: I missed the 70s by a couple years, but love so many things from that decade. My fave TV show from that era would be Three's Company (had a huge crush on John Ritter), movie would be either Rocky or Superman, and The Police are my favourite band of all time.

Teresa:  This was the time of the Godfather movies and the first Star Wars movies. Favorite music was Chicago and Earth, Wind & Fire.

Christine:  I'm a Star Wars fan and the original came out in 1977. As for TV, The Dukes of Hazzard started in 1979 so I guess that counts. It began my crush on John Schneider. I was never a huge fan of '70s music but for some reason the Bee Gees "Stayin Alive" and ABBA's "Dancing Queen" have always stuck with me. 

What was your favorite scene from this Castle Season 6 episode?

Chandel: Watching the actors pretend to act. It was kind of funny to see Stana Katic as Kate try to act badly with the script Martha gave her to keep selling the that it was the '70's. Kate's delayed slam of the table made me chuckle. Watching Rick pretend to act was pretty good, too--Nathan really sold his bit.

Jim: I really enjoyed the "walk" through the precinct; so many great nods to 70s show, like the bald guy eating a lollipop (a.k.a Kojak). Only one I didn't see what a Barretta reference.  

Robin: I loved the scene where they first met Harold. Kate's indignation at being talked down to was absolutely hilarious, as was Castle's comment on her assets.  Also, it's no coincidence that he called Nathan Fillion "Captain"...right, Firefly fans? 

Teresa:  Too many special scenes but I have to give shout out to Rob Duncan and his amazing score for this episode. After listening again I realized that his score sold the 70's disco era.

Christine:  I loved how Martha dove in and took control of everything at the precinct. It was such fun to see her be allowed to go over the top and be in her glory. 

C. Orlando was a TV Fanatic Staff Writer. Follow her on Twitter.