A very good season finale that delivers plenty of laughs while making some significant moves in the characters' lives.
Raj becoming Sheldon's temporary roommate is an inspired idea, and their new arrangement, complete with its own rules and formalities, is hilarious. Sheldon seems genuinely delighted to have found someone who can take over Leonard's domestic responsibilities.
The relationship developments are even more interesting. Priya's impending return to India creates uncertainty for Leonard, while Penny's admission that she still has feelings for him raises the possibility of a reunion next season.
But the biggest shock is Penny and Raj ending up in bed together. That's one hookup I never saw coming!
8.5/10: A funny, eventful finale that leaves several interesting questions hanging. A fitting end to a strong season.
Where to watch
Season 4 is listed on these subscription services. Provider buttons open the show, not this episode. HBO Max may display a location restriction; check your local account. No rental, purchase price or free trial is promised.