The 24-episode 10th season of The Big Bang Theory aired during the 2016/2017 TV season. All the series regulars returned for the 10th season, and many of the significant recurring cast members, such as Christine Baranski, Laurie Metcalf, Keith Carradine, and John Ross Bowie, returned. Dean Norris joined as a recurring cast member, and Katey Segal and Jack McBrayer were cast as Penny's mother and brother, respectively, and Judd Hirsch was cast as Leonard's father. Other guest cast members included Christopher Lloyd, Kate Micucci, and Alessandra Torresani.
I will not review the series itself, as anyone purchasing the DVDs or Blu-Rays, or considering doing so, is already familiar with the show. The writers continue to develop the characters, but the series has fewer cameo appearances by guest stars than in prior seasons (the most are in the season premiere, with a few others scattered throughout the season). The show continues to blend story-of-the-week procedural storylines with serial arcs. The big serial arc that runs throughout the season involves a guidance system that the group invented for the military. The other significant arc involves the relationships between Leonard and Penny and Sheldon and Amy. The season ends on a major cliffhanger that will reverberate into the next season.
The blu-ray set is a two-disc set, and the show looks and sounds great in the HD format. The extras include the Comic-Con writer's panel, a featurette in which the cast responding to Twitter questions, a short feature on the new family members introduced this season (Leonard's father, and Penny's mother and brother), a feature on Howard's and Bernadette's baby, highlights from the cast Comic-Con panel, and a gag reel. The episodes can be played with English captions, but they cannot be played in a "play all" mode that allows you to pick up where you left off. If you stop watching before completing every episode on the disc, you'll need to find where you left off.
The series remains good, but it is not as strong as it was in its early seasons. There are certainly those who think it is time for the series to end, and I think an argument can be made that it is becoming stale. But given that it is now going into its 11th season, I think it continues to develop the characters pretty well and come up with interesting stories, even if some of the jokes are getting recycled. Ultimately, if you liked or loved the prior seasons, this one is worth watching.