The opening scene to Guardians of the Galaxy Vol. 2 is fantastic for a bunch of different reasons. One of the main reasons is because Baby Groot spends the entire opening credits dancing to Electric Light Orchestra's "Mr. Blue Sky" while the rest of the Guardians fight a giant monster from another dimension. It's a great scene, a great way to open the movie, and it feels extreme in character for everyone.
That dance was apparently cheorographed by director James Gunn, recorded by producer Simon Hatt on a phone, and that footage was transformed into the opening dance number. To celebrate Guardians reaching $800 million at the worldwide box office Gunn posted some of that video to instagram.
It's not a very long video but it does show Gunn dancing with the footage from the movie on the bottom. The opening scene is several minutes long so perhaps the whole video will eventually surface online.
Guardians of the Galaxy Vol. 2 is out now. James Gunn directed it while it stars Chris Pratt, Zoe Saldana, Dave Bautista, Vin Diesel, Bradley Cooper, Michael Rooker, Karen Gillan, Pom Klementieff, and Kurt Russell.