1380164_370451129756148_1118575742_nOak Cliff-based filmmaker Kirby Warnock’s documentary “When Dallas Rocked” is the first film to completely sell out the Texas Theatre since the venue was revitalized a few years ago.

Moviegoers waited outside the theater in a line that ran down Jefferson and turned the corner at Bishop. The movie tells the story of the rock-n-roll scene in Dallas in the 1970s. Its premiere last week was made extra fun by the crowd of old-school party people — former employees of Mother Blues, musicians, radio DJs and music lovers — who cheered when their friends and favorites appeared on the screen.

If you missed it, here is a chance to see the film: “When Dallas Rocked” will screen again at 3 p.m. Saturday and Sunday, Oct. 12-13.

Here are six reasons to see it:

1. Kim Pierce, the awesome restaurant critic and food writer, was a Buddy magazine staffer back when her name was Kim Martin. I’m sure she did a great job of concert reviews and such back then. But also, you guys, she was hot. Like, with two t’s, hott.

2. It pays appropriate reverence to Dallas’ own Freddie King. The Rock-n-Roll Hall of Fame inductee, who grew up in Dallas, lived down the street from Mother Blues, according to the movie.

3. Jimmie Vaughan tells the story of how he once traded wah-wah pedals with Jimi Hendrix.

4. There are photos from the early ’80s of former Fashion Dallas editor Tracy Achor Hayes, who wrote for Buddy under the pseudonym Eva Destruction.

5. Actor Steven Tobolowsky tells a story about the time he was in a band with his Kimball High School classmate Stevie Ray Vaughan.

6. It commemorates a time before prevalent video, before cel phones and social media, when people read music magazines, bought records and listened to the radio. Maybe Dallas still rocks, but everything is different now. This is the only film that shows what the music scene was like back then, and it was epic.