Running for 12 seasons,  had countless moments that had fans hooked on the friendship between Sheldon, Leonard, Howard, and Raj. The show continued to grow with the addition of Penny, Amy, and Bernadette, which really rounded out the cast and made for a lot of rewatchable value.

After ending in 2019, fans are doing precisely that, revisiting the series and connecting the dots thanks to the spinoff, . And over on Reddit,  fans have shared small details and things they've never noticed during their first couple watches but are just realizing now.

Leonard's Glasses Don't Have Lenses

most about him. Each character has a specific sense of style that's easily identifiable. Penny loves a good pair of jeans, Howard always wears a dickey and Leonard's known for his thick-framed glasses.

However, one fan pointed out that Leonard's glasses don't actually have lenses in them. This was most likely done to prevent glares from the lights, but it's one of those things that would go unnoticed without .

Their Sense Of Style

With the exception of Penny, the men of  tend to but in different prints and colors. Because of this, it's easy to pick who the is so consistent.

Howard is typically wearing a dickey, Sheldon wears a graphic tee over a long sleeve shirt, Leonard wear's multiple layers under a light jacket, and Raj loves a good vest. Even Amy and Bernadette stick with the same kinds of clothes (Bernadette is in dresses and sweaters while Amy is in sweaters, skirts, and tights).

Sheldon Did Try Finding The Bird's Owner

In 'The Ornithophobia Diffusion,' Sheldon hated the fact that a bird was calling his windowsill home. He had a fear of birds and wanted them away from his viewing area. After opening his window, the bird flew into his apartment where he had no choice but to befriend it. Bernadette realized that the bird must have been someone's pet, so Sheldon said he'd put flyers up to find its owner.

Later in the episode, that Sheldon really did make flyers to find the bird's owner and posted them in the lobby. , he actually did the right thing in this instance.

Sheldon's Jab At Leonard

Viewers love scenes with Sheldon and Leonard because of their hilarious dynamic. Leonard appears to be one of the few people who can live in some kind of harmony with Sheldon. But despite their fondness for each other, Sheldon often throws jabs at Leonard without meaning to.

In one scene, a fan noticed that when Sheldon drew stick figures depicting him, Leonard, Howard, and Raj, he made Leonard's stick figure intentionally smaller than the others. This reflected real life, of course, but it's a subtle jab picked up .

Penny Really Cares About The Environment

At the start of , Penny tried acting like she was environmental in some kind of way by claiming she was a vegetarian, which was a .

It didn't take long to prove that Penny didn't last a vegetarian and didn't hold much of the green footprint that she put off. Funny enough, a bag in the background that said "A woman can tell a lot about a guy by the size of his carbon footprint." Now fans are wondering what Leonard's carbon footprint is like.

Is This Directed Towards Leonard?

It was strip down to his undies in the laundry room on two occasions. In one scene, Leonard wore nothing but the roommate flag around him as he did laundry (as a way to bother Sheldon, of course).

And in another, he stripped down to try to sleep with Penny in the laundry room (which Penny denied). Funny enough, after these moments, a sign was background that says "Please keep your clothes on while doing laundry." It makes one wonder if the landlord caught Leonard during one of these occasions.

A Connection To Former Shows

was fuzzy for a while, but it became better than ever when they tied the knot. During Leonard and Penny's vow renewal, viewers finally got a chance to meet Penny's mom and brother.

Fans of Kate Segal recognized her immediately as Kaley Cuoco's (Penny) mom in another sitcom, Fans loved that the writers brought this dynamic duo back together as mother and daughter in different worlds. Similarly, that the show also did this for Johnny Galecki (Leonard) and Sara Gilbert (Leslie Winkle) who were siblings in .

Penny Looks At The Camera!

As a main character, in the series. Whether it was her friendship with Sheldon, her efforts in becoming an actor, or her relationship with Leonard, Penny was constantly involved.

So much so realized there were a few occasions where Kaley Cuoco slipped and looked directly into the camera. As a show that was not a mockumentary of sorts, it's humorous that the show kept Penny's small glances towards the camera in the final product.

Sheldon & The Psychic

In 'The Psychic Vortex,' Penny brings Sheldon to a psychic to try and convince him of believing in the things she believes. Sheldon, however, was a hard sell. He didn't believe a thing that the psychic was saying. But after a few rewatches, a pointed out that the psychic actually predicted Sheldon's future.

The psychic noted that Sheldon had someone special in his life and once he let go of his grip and let her into his life fully, he'll achieve success. That's exactly what happened for him once he and Amy got engaged and tied the knot.

An Inconsistency With Barry Kripke

Is Barry Kriple playing basketball with Sheldon one of the funniest scenes? With both men unfamiliar with sports and unathletic, they hit a wall when they decided to play a game of basketball one day. But pointed out the inconsistency with Barry.

For someone without an athletic bone in his body and who acted as he had never worked out before, that quickly changed when he taught the gang how to fence, talked about rock climbing, and even worked out at the gym with Mrs. Davis. If anything, Barry should have beat Sheldon in this basketball game.