The Big Bang Theory Season 9: Best Episode, Funniest Quote & More!

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Even though The Big Bang Theory Season 9 had a bit of a rough start, it turned out to be a season filled with pivotal and endearing moments.

Of course, it also gave us some moments that had us laughing out loud.

Check out our report card to see which moments were the best, which episode was the worst, which guest star was our favorite, and more!

1. Best Party

Best Party
For The Big Bang Theory's 200th episode, "The Celebration Experimentation," Sheldon gets a special surprise birthday. It becomes a bit too much for him to handle at first, but once Penny gives him a pep talk, he's able to enjoy himself in a celebration that includes Bat Man himself.

2. Best Episode

Best Episode
Hands down, the best episode of The Big Bang Theory this season was Season 9 Episode 11, "The Opening Night Excitation." Sheldon and Amy finally sleep together in an episode that balances humor and sweetness.

3. Favorite New Romance

Favorite New Romance
Sheldon and Leonard aren't thrilled, but Penny really loves the idea of a romance between Leonard's dad and Sheldon's mom. I mean, come on, how could we not be excited about that?

4. Most Underutilized Character

Most Underutilized Character
For some reason, Leonard's story arcs haven't felt very significant lately, other than his marriage with Penny. If there's anything we'd like to see next season, it's something of more substance for Leonard.

5. Best Valentine's Day Celebration

Best Valentine's Day Celebration
The best way to celebrate Valentine's Day? To crash your friends' live Fun with Flags episode wearing cupid outfits and throwing confetti at the camera. Leonard will apparently wear anything. Hey, he's a good sport.

6. Best Surprise

Best Surprise
Soon, we'll have a new addition to the Big Bang Theory gang! Howard and Bernadette learning that they have a baby on the way was another pivotal (and emotional) moment from The Big Bang Theory Season 9.

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TBBT Quotes

Raj: Okay, here's another one: if a zombie bites a vampire, and the vampire bites a human, does the human become a vampire or a zombie? Or, a zompire?

Amy: Sheldon, there's something else I've been wanting to say, but before I do, I just... I want you to know that you don't have to say it back.I know you're not ready, and I don't want you to say it just because social convention dictates...
Sheldon: I love you, too.
Amy: You said it.
Sheldon: There's no denying I have feelings for you that can't be explained in any other way. I briefly considered that I had a brain parasite. But that seems even more far-fetched. The only conclusion was love.