Sat. Best Bets: 6/20

6pm: Mariachi

This year’s edition of the two-day Mariachi USA Festival pays special tribute to the celebratory musical form’s history in film. Among the half-dozen groups scheduled to appear are Sol de America, Cobre and all-female bands Mariachi Las Adelitas and Mariachi Las Alondras. Added attractions include film clips, a photography exhibit of mariachi legends, closing fireworks and an appearance from Mexico City’s Ballet Folklorico Tonantzin.

* Mariachi USA Festival, Hollywood Bowl, 2301 N. Highland Ave., Hollywood. $12.50-$125. Also Sunday, 5-9:30 p.m. (213) 848-7717.

10am: Festival

The Great American Irish Fair and Music Festival has something for everyone: The wee ones can visit Leprechaun Kingdom, a magical place filled with games, pony rides and fairies, while grown-ups enjoy Irish step dancing, performances by Tommy Makem and the Clancy’s with Robbie O’Connell, Irish food, arts and crafts, storytelling, sheep herding, dog shows and more.

* Great American Irish Fair and Music Festival, Saturday-Sunday, 10 a.m.-6 p.m., Santa Anita Park Racetrack, 285 W. Huntington Drive, Arcadia. Adults, $15; seniors, $12.50; children under 12, free. (Admission $10 Sunday at Gate 6, 10-11 a.m., with two canned food donations.) (626) 574-7223.

2pm: Pop Music

English techno-rock force Prodigy, folk-rockers the Wallflowers, post-grunge trio Everclear and, it seems, just about every band that’s been played on KROQ this year will be on the Irvine Meadows Amphitheatre stage for the station’s sixth annual Weenie Roast and Fiesta, a summer alt-rock institution. Didn’t score tickets? Tune into 106.7 FM all day for the live broadcast.

* KROQ Weenie Roast and Fiesta with Prodigy, the Wallflowers, Everclear, Green Day, Cherry Poppin’ Daddies, Fastball, Marcy Playground, Madness, Save Ferris, Third Eye Blind, Crystal Method, Big Bad Voodoo Daddy, Ozomatli, Deftones, Harvey Danger and Sprung Monkey at Irvine Meadows Amphitheatre, 8800 Irvine Center Drive, Irvine. Sold out. (714) 855-4515.

8pm: Theater

The ultimate dysfunctional family engages in an amorous roundelay that breaks all moral boundaries in “Indiscretions” (Les Parents Terribles) at the Pacific Resident Theatre. The engagement will be the Los Angeles premiere of Jean Cocteau’s classic, considered so scandalous that its 1941 revival was banned in Paris.

* “Indiscretions,” Pacific Resident Theatre, 703 Venice Blvd., Venice. Thursdays-Saturdays, 8 p.m.; Sundays, 7 p.m., through July 26. $20; opening night, $25. (213) 660-8587.

8pm: Music

L.A.-based vocal ensemble Zephyr: Voices Unbound presents “Zephyr Unplucked: Bird Music From Three Centuries,” a program of poetry, humor and choral music by Janequin, Schubert, Hindemith, Kent Carlson, Lisa Dowling and Ken Neufeld.

* “Zephyr Unplucked,” St. Nicholas’ Church, 17114 Ventura Blvd., Encino. $15. (562) 927-7080.

8pm: Theater

The Odyssey Theatre Ensemble celebrates the 100th anniversary of Bertolt Brecht’s birth with his classic “The Good Woman of Setzuan.” The parable represents a struggle between good and evil, as three gods search for one good woman--a prostitute, as it turns out.

* “The Good Woman of Setzuan,” Odyssey Theatre Ensemble, 2055 S. Sepulveda Blvd., West L.A. Wednesdays-Saturdays, 8 p.m.; Sundays, 7 p.m., except 2 p.m. only on June 28 and July 12. Ends July 17. $18.50-$22.50. (310) 477-2055.

FREEBIE: Myanmar Folk Festival celebrates Southeast Asian culture, Pacific Asia Museum, Pasadena, 1 p.m. (626) 449-2742.