Five things to do in Brooklyn this week!

Friday

April 20

High holiday

Yes, today is April 20, which is 4/20, which is the weed number, man! That means that you can expect some extra marijuana smoke wherever you go in the city. Honestly, the dope jokes are little over, but “420: The Musical” — a pot-friendly musical about a stoner in an Oz-like world of weed — still looks like a lot of fun.

8 pm at Unruly Collective (200 Cooper St. between Wilson and Central avenues in Bushwick, www.420themusical.com). $15 ($10 in advance).

Saturday

April 21

Doll arts

Freak out over a masterpiece of creepy stop-motion animation at “Phantom Museums,” tonight’s screening of three short films from twin brothers Stephen and Timothy Quay, including “Street of the Crocodiles,” considered one of the best animated films of all time. The show will feature a live, original score featuring harps, violins, chanting, whistling, whispering, gongs, maracas, and crystal glasses.

8 pm at National Sawdust [80 N. Sixth St. at Wythe Avenue in Williamsburg, (646) 779–8455], www.nationalsawdust.org. $20–$29.

Sunday

April 22

Page turner

Head down to Coney Island for an advance look at the upcoming stage play “Becoming Bettie Page,” written by nightlife impresario Dick Zigun. This staged reading about the origin of the naughty 1950s pin-up girl will take place on her 95th birthday, so it will also feature birthday cake, as well as a screening of her film “Teasearama.”

6 pm at Coney Island USA (1208 Surf Ave. at W. 12th St. in Coney Island, www.coneyisland.com). $10.

Brain power: The film “The Brain that Would Die,” gets an in-depth examination as part of “Kevin Geeks Out About Mad Science” at the Alamo Drafthouse on April 26.

Monday

April 23

Press on-Ward

Vocal powerhouse Lauren Ruth Ward will bust out bluesy tunes with entertaining titles — including “Blue Collar Sex Kitten” and “Did I Offend You?” — tonight at Baby’s All Right, all taken from her debut album “Well Hell.” With opening act Slugs.

8 pm at Baby’s All Right [146 Broadway between Bedford and Driggs avenues in Williamsburg, (718) 599–5800], www.babysallright.com. $14 ($12 in advance).

Thursday

April 26

Mad men

What has science ever done for us, except give us living brains in jars, super-intelligent gorillas, and sharks with freakin’ lasers? Wait, all those things are awesome! See what mad science hath wrought at the video variety show “Kevin Geeks Out about Mad Science,” featuring a musical tribute to Frankenstein, clips from “Invasion of the Bee Girls,” and an in-depth discussion of “The Brain That Wouldn’t Die!”

7:45 pm at Alamo Drafthouse Cinema [445 Albee Square West between Fulton and Willoughby streets Downtown, (718) 513–2547, www.drafthouse.com/nyc]. $15.