You can watch The Big Bang Theory on several streaming platforms:

• Max (formerly HBO Max) offers all seasons of The Big Bang Theory with plans starting at $9.99/month

• Hulu also streams the series, including all seasons

• Disney+ has the show available in some regions like the UK and Ireland

• TBS frequently airs episodes on cable TV

• You can also buy or rent episodes on platforms like Apple TV, Amazon Video, Fandango at Home, and Microsoft Store

• Additionally, YouTube TV offers the show as part of its live TV streaming service with a free trial option

• Roku devices support streaming The Big Bang Theory via Max, TBS, Prime Video, Apple TV, and other services

Availability can vary by country, so if you don't find it on your local Netflix or Disney+, it may be on Max or Hulu instead. Using a VPN can sometimes help access the show on platforms available in other regions

. In summary, the most reliable streaming services to watch The Big Bang Theory currently are Max, Hulu, Disney+ (in some regions), and TBS for cable viewers