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Who knew the Game of Thrones cast was so...musical?

The series' fifth season premieres Sunday on HBO, and to celebrate, Jimmy Fallon and The Tonight Show team decided edit "footage from Game of Thrones to the tune of 'I'm so Excited' by The Pointer Sisters." The video showed deceased characters, like Ned Stark (Sean Bean) and King Joffrey (Jack Gleeson), plus living characters, like Daenerys Targaryen (Emilia Clarke) and Jon Snow (Kit Harrington).

Nikolaj Coster-Waldau, who plays king slayer Jaime Lannister, was a guest Thursday night. "This year there is a lot of stuff that isn't in the books because they're off-book on some of the storylines," he said.

"My whole story is not in the books," he added.

"Spoiler for me!" Jimmy said. "I love this!"

During their interview, Nikolaj also opened up about his daughters, Philippa Waldau and Safina Waldau. "Are you an embarrassing dad?" Jimmy asked. Nikolaj replied, "Well, yeah. That's kind of part of the job description! They have friends over sometimes and it's fun to embarrass your kids, because it's so easy."

"Can you, like, dance in front of them?" Jimmy asked.

"I'll dance," the 44-year-old actor told the late-night host. "One of their friends is a really good dancer. She was showing me this move and of course I had to do it, which was really embarrassing for my kids."

Jimmy told him, "I have a great move I can show you later."

Not wanting to wait, Nikolaj said, "Let me see it!"

To see Jimmy's "great move," watch the video now!

Game of Thrones returns Sunday at 9 p.m. on HBO.

(E! and NBC are both part of the NBCUniversal family.)