It was a good show and now it slowly canters towards the final season, a wheezing goliath that got too popular with the mainstream and lost its identity.
It is only worth watching in a binge session (and you can easily binge it because they have been reducing the length of it for a while now).
"If you’re still keeping up with The Big Bang Theory, which is currently midway through its ninth season on CBS, then you probably noticed something different about the most recent episode, “The Sales Call Sublimation.” As Reddit user specialkkurtis pointed out on the r/television forum, the episode was only 18 minutes and 34 seconds in length. Being that TBBT sits in a coveted half-hour slot on Thursday nights, this means that viewers were treated to a whopping 11 minutes and 26 seconds of commercials."