Session Zero from Critical Role's Daggerheart campaign: Age of Umbra [video 2h] - tchncs
I only watched parts of the Critical Role stuff but I believe they never
released a session zero? Also, Daggerheart is newly released so it might be
interesting just because of that.
I did one of the StartPlaying intro games for Daggerheart and it was a total blast. Even playing with five others who had never played with each other and were all new to the system it was seamless and really fun.