Regional arts and entertainment events

Sunday

Sexual politics In Ray Cooney's 1981 farce Two Into One, a married member of Parliament sets up a tryst with the prime minister's secretary at a remote hotel, only to find his plan complicated by the presence of his wife, an officious hotelier, a confused waiter, a jealous husband, and a family-values opponent also on the make - for him. Expect lots of slamming doors when the show goes on at 2 p.m. Sunday at the Hedgerow Theatre, 64 Rose Valley Rd., Media, continuing with shows at 7:30 p.m. Thursday through Saturday, and 2 p.m. next Sunday. Tickets are $10 to $29. Call 610-565-4211.

Entomologist Dan Otte, besides being one of the world's foremost experts on grasshoppers and crickets, is also a fine illustrator, using colored pencil, graphite, ink, and watercolor to capture, in deft detail, depictions of the subjects of his study. He is also a pioneer in recording and interpreting sound-producing insects. The exhibition

Dual Nature: Science Illustrations of Dan Otte

collects his drawings, paintings, and recordings at

the Academy of Natural Sciences,

1900 Benjamin Franklin Parkway, to Dec. 4. Tickets are $12; $10 for seniors, students, military personnel, and ages 3 to 12; younger than 3 free. Call 215-299-1000.

Monday

The front man for the Australian combo Something for Kate,

Paul Dempsey

, has finally had his two-year-old solo album

Everything Is True

released here. It's a sensational collection of gorgeously textured, melancholic, but muscular pop. He opens for Chicago emo sextet

Scattered Trees

at 8 p.m. at

Kung Fu Necktie

, 1250 N. Front St. Tickets are $10. Call 215-291-4919.

Tuesday

Summer blockbusters don't get much better than the first one: Steven Spielberg's 1975 thriller,

Jaws

, about a shark terrorizing a summer resort. It's also a classic film, which is more than can be said of the many blockbusters that followed. The film screens at 7 p.m. at

the Bryn Mawr Film Institute

, 824 W. Lancaster Ave., Bryn Mawr. Tickets are $10; seniors and students $7. Call 610-527-9898.

We have to say this lineup doesn't exactly evoke memories of tie-dye and incense for us, but

Dave Mason

(of Traffic),

Mark Farner

(of Grand Funk Railroad),

Rick Derringer

(of the McCoys),

Felix Cavaliere

(of the Young Rascals), and

Gary Wright

(of Spooky Tooth) are still a pretty groovy gathering of talent for the

Hippiefest

at 8 p.m. at

the Keswick Theatre

, Easton Road and Keswick Avenue, Glenside. Tickets are $49 and $59. Call 215-572-7650.

Hip-hop godfather

Raekwon

is joined by Wu-Tang Clan comrade

Ghostface Killah

and East Coast legends

Mobb Deep

at 7 p.m. at the

Theatre of Living Arts

, 334 South St. Tickets are $33. Call 215-922-1011.

Wednesday

In the final film Laurel and Hardy made with Hal Roach, the 1940 comedy

Saps at Sea

, Ollie has a nervous breakdown while working at a horn factory and, to rest, signs on for a sea voyage with coworker Stan - on a ship that also harbors an escaped criminal. The film screens at 7 p.m. at

the County Theater

, 20 E. State St., Doylestown. Tickets are $9.50; seniors and students $7. Call 215-345-6789.

Thursday

In a measure of how little control we have over nature, smallpox is the only major infectious disease to have been eradicated, and that took thousands of years. Epidemics have had a huge effect on the history of the United States, from those that ravaged native populations to those used as weapons. Physician

Robert Hicks

of the Mutter Museum presents an illustrated lecture on the scourge,

Pox on History

, using artifacts from the museum's collection, at 5 p.m. at

the National Constitution Center

, 525 Arch St. Admission is $5. Call 215-409-6700.

Husband and guitarist Derek Trucks and wife and singer Susan Tedeschi, best known as solo artists, have teamed up to form

the Tedeschi Trucks Band

, a powerhouse blues-funk outfit. They headline a dynamite bill with

Steve Earle and the Dukes (and Duchesses)

- featuring Allison Moorer - at 7 p.m. at

the Tower Theater

, 69th and Market Streets, Upper Darby. Tickets are $29.50 to $68.50. Call 610-352-2887

Friday & Saturday

Percussionist

Raul Midón

performs on a bill with smooth singer

Carolyn Perteete

at

Penn's Landing's

Great Plaza, Columbus Boulevard and Chestnut Street, at 7:30 p.m. Friday. Admission is free. Call 215-922-2386.

Singer

Joan Osborne

performs an acoustic set at

World Cafe Live

, 3025 Walnut St., at 7:30 p.m. Saturday. Tickets are $45.50 and $55.50. Call 215-222-1400.