The Case Against 8, a behind the scenes look at AFER’s federal court challenge to California’s Prop. 8 generated a lot of buzz at the 2014 Sundance Film Festival.

Here’s what happened:

The poster was released, and it’s awesome.

The premiere received a sustained standing ovation.

Standing ovation through the credits! Congrats to everyone for a fantastic premiere #SayIDo pic.twitter.com/xtqr5CIho0

— TheCaseAgainst8 (@TheCaseAgainst8) January 18, 2014

Just saw The Case Against 8 @sundancefest, one of the greatest most emotional docs I’ve ever seen. Thank you @Jzpk4equality #ILoveTedOlson

— Morgan Spurlock (@MorganSpurlock) January 18, 2014

Something I’ve never seen before– standing ovation for the full credits of The Case Against 8. Amazing film. #Sundance

— Amy Letourneau (@amylet) January 18, 2014

The filmmakers, the lawyers, the defendants — audience is giving a lot of love to the CASE AGAINST 8 folks. #Sundance #HBO #AFER

— Alonso Duralde (@ADuralde) January 18, 2014

Cold compress on my eyes after seeing @TheCaseAgainst8 Emotional journey of a film and worth every step. #sundance #afer #equalrights

— Patrick Connolly (@PJConnolly) January 18, 2014

BuzzFeed added it to its list of “21 Sundance Movies You Need To Know About”

The Hollywood Reporter had this to say:

And it took home one of the festival’s top prizes, for best directing of a documentary.