Good day: Wednesday. June 13

Best medicine: American Conservatory Theater presents “The Imaginary Invalid,” Molière’s comedy about 17th-century health care, told through the story of a tightwad hypochondriac. [8 p.m., A.C.T., 415 Geary St.]

Who’s in town

Broadway musical-theater performer Marin Mazzie, direct from her role as the Lady of the Lake in “Spamalot,” appears in “Yes, It’s Today,” a cabaret show celebrating the music of Jerry Herman and Kander and Ebb. [8 p.m., Empire Plush Room, York Hotel, 940 Sutter St.]

City activities

Mozart for lunch: The Midsummer Mozart Festival Ensemble performs compositions by Mozart. [12:30 p.m., St. Patrick’s Church, 756 Mission St.]

Day game: The Giants end their current home stand with a game against the Toronto Blue Jays. [12:35 p.m., AT&T Park, 24 Willie Mays Plaza]

At the public library

E-mail class: Instruction covers how to set up an account, compose messages and send and receive e-mail. [2 to 4 p.m., Mission Bay Branch, 960 Fourth St.]

Business counseling: The Service Corps of Retired Executives offers free sessions. [10 a.m. to 3 p.m., Main Library, Business Center, 100 Larkin St.; call (415) 744-6827 for an appointment]

Lectures

Eric Schmitt: The New York Times military correspondent discusses his trips to Iraq and Afghanistan and his series exposing the sale of sensitive U.S. technology to China. [12:30 p.m., Commonwealth Club, 595 Market St.]

William Ratliff: The scholar of Latin American history and international relations discusses Latin America’s current political landscape and leftist governments. [Noon, World Affairs Council, 312 Sutter St.]

Literary events

Michael Ondaatje: The author of “The English Patient” appears in conversation with poet Robert Hass. [8 p.m., Herbst Theatre, 401 Van Ness Ave.]

Martin Cruz Smith: The novelist discusses “Stalin’s Ghost.” [12:30 p.m., Stacey’s Bookstore, 581 Market St.]

More safe sites for people living in vehicles proposed

“This is not a new model; this is something that’s been utilized around the country.”

Homelessness dipped in San Francisco during pandemic

“Our investments in shelter and housing are resulting in improvements in the lives of people experiencing homelessness and conditions on our streets.”

An Australian gem’s emotional night at the Fillmore

Orchestral arrangements amplify resonance of Gang of Youths’ material