I watched a documentary by a Canadian filmmaker named Barry Stevens, who learned as a young man that he had been donor-conceived and began searching for his biological father in midlife. Stevens interspersed research into his paternity with film footage from his childhood in which he and his parents—his mother and his social father, as it turned out—were on vacation in California.
Highlighted because I’d like to see this. Two other relevant movies that I have seen - one of them multiple times, one that I just learned of recently: Three Identical Strangers, and Stories We Tell, by the amazing Sarah Polley.
The documentary is apparently called Offspring.

