Good day: Wednesday, May 23

At the ballpark: The Giants complete a three-game series against the Houston Astros. [7:15 p.m., AT&T Park, 24 Willie Mays Plaza]

Who’s in town

French violin virtuoso Frederic Pelassy performs works by Bach, Prokofiev, Ysaye and Paganini. [7 p.m., Alliance Française de San Francisco, 1345 Bush St.]

City activities

Camera work: The Arts Commission Gallery hosts an artist reception for “Lens on Life,” an exhibit exploring place and identity from African and African-American perspectives. [5:30 to 7:30 p.m., City Hall, 1 Dr. Carlton B. Goodlett Place]

Now hiring: The Employment Development Department and the San Francisco Veterans Employment Committee present a job fair featuring a wide range of job openings. [9 a.m. to 3 p.m., Building A, Fort Mason Center]

At the public library

Diane di Prima: The poet appears in an evening of poetry and conversation, hosted by the Excelsior Library Arts and Culture Salon. [7 p.m., Excelsior Branch, 4400 Mission St.]

Bubble Lady: Rebecca Nile presents an interactive performance of bubble tricks. [4:30 to 6:30 p.m., Bayview Branch, 5075 Third St.]

Lectures

Christopher Hitchens: The author, journalist and critic appears in conversation with Grace Cathedral dean Alan Jones. [8 p.m., Herbst Theatre, 401 Van Ness Ave.]

Chad Hurley and Steve Chen: The YouTube founders appear in conversation with Wired Magazine editor-in-chief Chris Anderson. [6:30 p.m., Hotel Nikko, 222 Mason St.]

Literary events

Natalie Angier: The New York Times science columnist discusses “The Canon: A Whirligig Tour of the Beautiful Basics of Science.” [6 p.m., Commonwealth Club, 595 Market St.]

Beth Schoenfeldt and Victoria Colligan: The authors and businesswomen discuss “Ladies Who Launch.” [7 p.m., Book Passage, 1 Ferry Building]