Best The Big Bang Theory Seasons

The Top Ten
1 Season 3

Man this season is amazing, the maternal congruence, the pants alternative, the lunar excitation, the starcaise implementation best season of all time.

Best episodes and story lines supported by development of characters

2 Season 5

Shamy brings " The Realtionship Agreement" into effect.

Bernadette & Howard's wedding.

It's honestly one of the best seasons
There's so much character development here to be honest

3 Season 2

This season was the funniest, I loved the sexual tension Leonard and Penny had.

This season is the best! Penny's hair was the cutest on this season as well.

This season was great except Bernadette was missing.

4 Season 4

The best season, and not just because it contains my favourite ep "The Zazzy Substitution". The episode with Penny's dad is a highlight, too. It's also season where the characters of Bernadette and Amy are still funny and appealing before becoming insufferable ala season 7.

Season 4 will probably always be the best, although season 6 isn't far behind it! Season 5 is overrated, though.

I love it because of the new characters that bring some sort of a fresh air in the show.

5 Season 1
6 Season 7

This is more of a general reflection than a comment about Season 7. I think the series' seasons can be divided in two groups: Seasons 1-7 are overall great (if we exclude some minor characters), while 8-12 are fairly mediocre. Apart from the quality of comic situations and dialogues, which dropped dramatically in the last five years, a main reason why early-to-middle seasons are better is how changes have been developed. All the most important changes and evolutions we saw after the first two (awesome) seasons and up to Season 7 were gradual, but at the same time they didn't take too long: friendship between Penny and Sheldon was developed mostly in Season 3 and just maintained/strengthened in the following ones, Howard's transformation from a creep to a good guy took place entirely in Season 4, Amy had already changed her attitude in early Season 5 and Leonard and Penny's relationship, as troubled as it was, still went on quickly enough in Seasons 6 and 7. Then, all the main events have been dragged to a fault, everything slowed down and, as a result, subsequent changes didn't feel as natural and spontaneous as before. Just to make few examples, Amy and Sheldon could have started to live together at the beginning of Season 8 when he came back from his "escape", instead of two years later; Bernadette and Howard could have had both children (twins maybe?) in the same season; Penny actually working at the pharmaceuticals could have been showed much before Season TWELVE since she got that job almost five years before; Leonard and Penny could have married just once, ecc.
Maybe there would have been 9 or 10 seasons instead of 12, but the average quality would have been much higher and nearly perfect. Still, the finale was incredibly great: it brought everything full circle, it was moving, funny and very satisfying, so everything is forgiven.

7 Season 6

One of the best T.V. seasons in history, no duds. In my opinion. The cast are literally the best comedy actors in the world at the moment

8 Season 8

I genuinely liked this season. I thought it was fun and cheery.

9 Season 10

Not one of the best, but Leonard's burp in The Romance Recalibration is very funny

10 Season 9

Really improved. I feel like the show is back to what we loved!

The Contenders
11 Season 11

Very underrated. It starts pretty lamely with the first 3 episodes, but it also has several remarkable ones like The Collaboration Contamination, The Proton Regeneration, The Bitcoin Entanglement (very nostalgic but entertaining), The Celebration Reverberation, The Solo Oscillation, The Comet Polarization and The Bow Tie Asymmetry. I'm not saying it's the best nor even among the best, because it clearly isn't, but it definitely should be ahead of Seasons 8, 9 and 10 and maybe even Season 4, because of that awful Priya story arc.

12 Season 12
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