Castle Season 1 Bloopers 

"SHE'S A MINOR!" "I SAID, i owe her a dollar!" LOL

"She's a minor!" "I said I owe her a dollar!"

2:00 THAT'S THE CUTEST LAUGH I'VE EVER HEARD

"like what? this motor oil, this mortal coil?" oh, seamus. you and your music. LOVE.

Seamus Dever is fucking hilarious. "This motor oil, this mortal coil." Seriously?!

0:40 I love her reaction, like startled but then 'Oh yeah, he does this all the time'

I love Seamus' laugh.

Nathan: Are you crying? Stana: No, he's already said that before. Nathan:Jesus, oh my god.

Watching the bloopers in the good old days when everyone was friends literally makes me want to cry

Love the part with Seamus. He's adorable! I love his laugh!

i laughed so hard when nathan screamed. reminded me when he yelled 'trap' in the serenity blooper

Oh lord, those puns at the end, thought I was going to die!

"Like what? Oil's well that ends well?" *SLAP* XDDDDDD

2020 i am still here

i like a smile of Seamus (j'adore le sourire de Seamus)

Nathan Fillion must be one of the most fun people to work with. These are so funny, and the Firefly bloopers are even more hilarious.

Holy crap, Seamus' laugh just gets me EVERY TIME. Oh god, I can't stop laughing...!

0:40 - Nathan's little scream and Stana's face made me laugh so hard! :D And when Nathan slapped Seamus after 'Oil's well that ends well?' I spat out my coffee I was laughing so much. What a freaking amazing bunch of people. :D

1:05 is absolutely hilarious Nathans face priceless when you pause it at that exact moment

"like what? oil's well that ends well?" YEEEEEEEAAAAAAAHHHHHHH

Oil's well that ends well XDD

Seamus's little series of stupid sayings is so darn FUNNY! And can I just say, he has the CUTEST FREAKING EYES!

I love his laugh at 2:25. It cracks me up every time

that old man... he's just so hilarious. his expressions... priceless.

Like what? Oil's well that ends well? *slap*

Castle at 0:41, i'm still laughing right now !!

So funny it made it to my favorites list along with season 3! Love castles scream and everyones expressions. And when he's looking at the computer with beckett and he's starts saying things tht don't make sense. Priceless.

"What's got two thumbs and has a date with a prostitute? THIS GUYYYYY!"

i feel like nathan is playing himself, he doesnt break break character at all when messing up haha

how can Ryan(Seamus) be sooo cute?? His eyes...*.* Oh and his laugh, I can't help but laughing too every time I watch it! :D

Seamus laughs so cute😂♥️

favorite moment: castle's scream of horror when becket opens the folder and her following expression! FTW!!

OMG 0:39 watched about 40 times and still laughing :'D

OK CAN WE OFFICIALLY AGREE THAT SEAMUS DEVER HAS THE MOST FREAKING ADORABLE LAUGH EVER...!!!!!! If you check Castle Bloopers Season 2, in 1:49 he laughs again lol!! LOVE YOU DET. RYAN

Ryan's Like what...Priceless.

"oils well that ends well" seamus dever :D

"Did you see us fighting?" "No." "TRAAAAAAAAAAAAAAAAAAP!"

She's a minor hahahahah aha

'Oils well that ends well' cracked me up. So did the scene when Nathan puts down his own book :P

Anyone else think they just fit together perfectly in a hug? WRITERS, MAKE THEM HUG MORE. ONE HUG IN FOUR SEASONS.

Nathan's scream at 0.40 is bloody hilarious!

He said "Hi, America"... but here in Italy, now, we feel lonely... Love Nathan Fillion and Castle

seamus and his overly long gag. XD my face muscles hurt.

Love the last part with Seamus dever!!!! :)

I LOVE her expression after the girly scream at :39. It's like, ".......really?". LOL!

"Remember when I was good at this?"

ahahah it must be a blessing to shoot with Nathan

Thank You SO Much! I've been looking for these everywhere :D

omg when she opens that file and he screams like a girl...LMAO it's almost like something castle would do and stana has a total "beckett" reaction of just standing there like "are you finished?" hahah

Translated spanish part: Miss Becket, really hot. How beautiful! Mister Castle (Señor Castillo XDD I laughed so hard XD) a complete man (bad use of this word in spanish XD)

He owes her a dollar! Lol. Oil's well that ends well!

Great bloopers

such a cute smile, seamus;)

omg i love the one when he looks at the book and just shakes his head and walk :P

finallyyyyyy. Thanks very much. :)

I love castle!!!!! It's my new favorite show!

"Oil's well that ends well". *slapped*

Someone else is totaly in love with Nathan Fillion's voice...? Because I am :}

hahaha one of the best bloopers i have ever saw!

1:29 "Richard! Hello! Did you hear that your cousin Jeffery got a job working for the Parks Department?"

I love Seamus' laugh!! And the eyes aren't too bad either.

I am so excited !! I want to see Season 4 now !!! It takes so long !!

@bruni114 that was amazing.. and the lady behind him jumped! too great!!!

And flabberla and flebadau. He looks so serious as he says that! Love it!

I'm 99% certain she says "Nobody's ever said that to me before..." :)

@ncis4ver29 yeah! btw thanks for uploading this =)

Fam fam, flopatta, and flipittyjoo. He's so cute!

Seamus's laugh is so cute! As is his face :)

0:40 my dad did that to mess with me and then he showed my this show and I wasn’t mad at him anymore lol

Hahaha loved the scrubs quote from castle! :D

I started giggling like a schoolgirl when Nathan began screaming lol.

This is priceless :D

@TheFrogMuse My favorite is "this motor oil, this mortal coil" xD .

me encanta castle jejejjeeje

00:39 to 00:45. Nathan's face and then Stana's. So Caskett

love the castle scream at 0:39 XD AHHHHHHHHH!!

ITS SICK..big time!

Genio Jonathan Banks!!!!! sr castillo! jajjaja

0:40 I'm laughing so hard. :D

I love this. Nathan Fillion, Nathan Fillion, Nathan Fillion, oh wait we have other cast members who occasionally screw up, Nathan Fillion...

LOL "Remember when I was good at this?" Oh, Nathan. You'll always be good at this. :)

i like seeing stana smile

"She's a minor!" haha I love Castle so much.

The SCREAMMM !!! :D

Oh, i love Seamus. XD

@TheCloisFan I second the Seamus tjing! He is absolutely adorable!

oil's well that ends well. omg. i died.

Ryan is sooooo cute!

miss Quinn is precious at 0:36

0:40 is awesome!

Katic's face when Fillion screams... too funy!

0:43 LOVE IT!!!!

Seamus♡♡

So I've NEVER been able to figure out what Stana says at 1:48, right after Nathan is all, "Are you crying?"

hahahahahhahah Castle's scream at :40 just cracked me up :D hahaha

The guy talking in 00:51 and 00:59 is talking spanish. He says the first time: "Ms Becket, very hot, so beautiful!" And the second time he says: "Mr Castle, perfect man". haha I'm spanish so I understand it:)

Oh...and also...UNCLE LEO. And "flabbula and flabbulaju"

Nathan is just too damn funny.

OMG i love ryan! he's so cute! lol

¿Señor Castillo, hombre con plato? WTF?