By Maria Myka (media@latinospost.com) | First Posted: Nov 21, 2014 06:41 AM EST

Last week's episode just might be, according to Christian Post, the most heartfelt of the season, but this week's episode, called "The Champagne Reflection" according to the International Business Times, is more for the laughs, with Sheldon Cooper (Jim Parsons) finally ending his web series, "Fun With Flags," because he "can no longer balance a full-time career, a popular internet show, and a girlfriend."

Although the web series is referenced from time to time, Sheldon, apparently, has been very committed to it, with 232 episodes (or, according to Sheldon, 233 if they include the one where somebody forgot to press record on). With the last episode come highlights, and Sheldon did not skimp on costumes.

He became an Aussie with a boomerang with Amy (Mayim Bialik) as a kangaroo. He also became a very indignant Betsy Ross. Finally, he paired up with Amy as a retro couple on the beach. Then there's the game of "Flag or Not a Flag."

But that's not the only storyline in the episode that caused a lot of laughs. Apparently, Bernadette (Melissa Rauch) was unaware that everyone at their office was afraid of her! Who else thought that the little blonde girl could be such a bully, right? She had to learn about how people perceive her through Penny (Kaley Cuoco-Sweeting). Of course, if she can't be mean, she can be cute - and she seemed to have been using that to her advantage!

As for the rest of the gang, Leonard (Johnny Galecki), Howard (Simon Helberg), and Raj (Kunal Nayyar) are packing up the office of a dead professor, and they were looking for "something significant in the dead professor's research."

Unfortunately, they only managed to find a bottle of champagne that they vowed not to drink until they can do something significant in their research (and rub it in Sheldon's nose).

Unfortunately, the bottle was opened by Sheldon himself, much to Leonard's chagrin.

"The Big Bang Theory" airs on CBS every Thursday at 8PM.