THURSDAY

ERNI G ON SRJC CAMPUS

From Comedy Central’s “Make Me Laugh” to George Lopez’s “Que Locos!” comedian Ernie G has established himself as one of the funniest, most inspiring comics and motivational speakers in the business. As part of SRJC’s Latino Heritage Month, Ernie G. will perform a lunch hour comedy show at the Carole L. Ellis Auditorium, in the Petaluma SRJC campus. Event is free, $4 parking.

CIRCUS VARGAS PRESENTS ‘STEAM-CIRQUE’

With Ringling Bros. having permanently folded its tent last March, Circus Vargas is now the largest touring circus in the U.S. It current animal-free show (well, there might be horses) carries a steampunk aesthetic with a touch of extreme sports and a high degree of old-fashioned big top razzle dazzle. The circus rolls in and raises its tent on Tuesday, with performances beginning on Thursday at 7:30 p.m., Friday (Sept. 15) at 4:30 p.m. and 7:30 p.m., Saturday (Sept. 16) at 1 p.m., 4 p.m., 7:30 p.m., Sunday (Sept. 17) at 12:30 p.m., 3:30 p.m., 7 p.m., and Monday (Sept. 18) at 6:30 p.m. CircusVargas.com

FRIDAY

MAN OF LA MANCHA

The beloved musical about Don Quixote and his impossible dream gets a first-rate production courtesy of Cinnabar Theater, director Elly Lichenstein, musical director Mary Chun, and a fine cast led by Daniel Cilli as Quixote, Daniella Innocenti-Beem as Aldonza, and Michael Van Why as Sancho Panza. Friday-Sunday through September 24, Friday and Saturday at 8 p.m., Sunday at 2 p.m.

ROBIN SLOAN

For his first novel after the remarkable “Mr. Penumbra’s 24-Hour Bookstore,” celebrated author Robin Sloan has delivered a funny, sweet, ironic, off-the-wall comedy-fantasy titled “Sourdough.” It features a harried computer programmer/robotics expert whose life is changed when she’s gifted a rare sourdough “starter” by a pair of baker brothers, and soon becomes obsessed with the inner life of yeasts, microbes, and the mysterious, underground bakery markets of San Francisco. 7 p.m. Copperfields Books, 140 Kentucky St.

SATURDAY

LOS GU’ACHIS

Completing a summertime tour of Sonoma County libraries, the Petaluma-based ensemble Los Gu’achis - Barbara Arhon on violin, Steve Della Maggiora on accordion and lead guitar, Chris Samson on rhythm guitar, Stephen Tamborski on mandolin and bass, and Tracy Grisman on bass - come to the Petaluma Library for an afternoon performance of instrumental music of the Southwest, Mexico and Early California. 2 p.m. Free. 100 Fairgrounds Dr.

LIFE SIZE MODELS

It doesn’t get better than the San Jose-based Indie-rockers known as Life Size Models, who offer a musical way out of the burdens of youth, with their skillful pop-folk-experimental blend of sorrowful sounds and high-spirited interludes, that impressively establish a comfy state of mind, then come apart like an ice rink in Purgatory. The Life Size Models, plus guests, will be playing the Big Easy, 128 American Alley. No cover. Bring your Dramamine. BigEasyPetaluma.com.

HIGHWAY POETS

Petaluma’s own thoroughfare elegiacs play the Mystic Theatre, alongside Kingsborough and John Courage. 21 Petaluma Blvd. N. $17. MysticTheatre.com/

SUNDAY

BLUES ROCKET

Playing a whizz-bang assortment of robust soul, R&B, and classic Rock, Blues Rocket members of Blues Rocket will make an afternoon splash-landing at Lagunitas Brewing Company, 1280 McDowell Blvd. No Cover. Lagunitas.com.