2pm Museum

Hard to believe that it’s been 40 years since TV first entered that fifth dimension as vast as space and as timeless as infinity called “The Twilight Zone.” To mark the anniversary of the show’s premiere on Oct. 2, 1959, the Hollywood Entertainment Museum will host an “Exploring the Twilight Zone” celebration. On hand will be Marc Scott Zicree, who wrote “The Twilight Zone Companion,” as well as actors who appeared in some of the 156 episodes.

* “Exploring the Twilight Zone” at the Hollywood Entertainment Museum, 7021 Hollywood Blvd., Hollywood. 2-4 p.m. Free with museum admission, which is $7.50 for adults, $4.50 for students and seniors. (323) 465-7900.

6pm

Pop Music

The new album from English electronic music pioneers the Pet Shop Boys is titled “Nightlife,” but for this occasion it could be called “Fright Nightlife.” The duo’s Irvine Meadows Amphitheatre stop will take the form of a Halloween party, complete with spooky attractions and a slate of DJs preceding the concert proper.

* Pet Shop Boys, with Doc Martin, Christian B, Rafael M, others, Irvine Meadows Amphitheatre, 8808 Irvine Center Drive, Irvine, 6 p.m. $20 to $42. (949) 855-2863. Also Monday at Universal Amphitheatre, 100 Universal City Plaza, Universal City, 8:15 p.m. $25.50 and $33. (818) 622-4440.

Pop Music

7 & 9:30 pm

On his first album in four years, Kris Kristofferson revisits some of his classic compositions, including “Sunday Morning Coming Down” and “Me and Bobby McGee,” with vocal help from Vince Gill, Steve Earle, Jackson Browne and others. His 10-city U.S. tour wraps up at the club where he played a key, career-launching engagement in 1970.

* Kris Kristofferson, the Troubadour, 9081 Santa Monica Blvd., West Hollywood, 7 and 9:30 p.m. $17.50. (310) 276-6168.

8pm

Art/Pop Music

Day of the Dead gets the creative juices flowing for Johnette Napolitano, the former Concrete Blonde leader. She’s marking the occasion with her public debut as an artist as part of a group show at Zero One Gallery (7025 Melrose Ave., Hollywood, [323] 965-9459), and with a concert at the Palace, where she’ll be backed by rock en espan~ol band Maria Fatal.

* Johnette Napolitano with Maria Fatal, the Palace, 1735 N. Vine St., Hollywood. 8 p.m. $18.50. (323) 462-3000.

8pm

Theater

The dance/theater duo of Jackie Planeix and Tom Crocker, otherwise known as Blue Palm, presents an environmental staging of “Millennium House,” a series of satiric, romantic and life-altering encounters performed indoors and outdoors at a 1908 Craftsman home.

* “Millennium House,” 3418 Winslow Drive, Los Angeles. Saturdays, 8 p.m. through Dec. 4. $20, includes champagne and hors d’oeuvres. (323) 663-2683.

10pm

Cabaret/Theater

Lili Barsha’s critically acclaimed “Haunted Cabaret” is back for its sixth year. The macabre, comic evening for adults features the accordion music of Nick Ariondo and the Devil, the Shadow, Jack the Ripper, the Mummy and other monstrous merrymakers performing poems, shadow plays, comedy, music and dance.

* “Haunted Cabaret,” Cafe Club Fais Do-Do, 5257 W. Adams Blvd., L.A. Saturday at 10 p.m. and Sunday at 8 p.m. $15; $10 if you come in costume. (213) 487-8250.

FREEBIES: Storyteller Jim Lewis will be featured at the Halloween Haunt at the Glendale Public Library’s children’s room, 222 E. Harvard St., Glendale, 2-3 p.m. For 4 years and older. (818) 548-2035.

The Valley Symphony performs at Wilshire-Ebell Theatre, 4401 W. 8th St., L.A. 8 p.m. (818) 947-2346.