For an extensive list of Halloween night parties and events, do check out SFBG, SF Weekly, The Squid List, and Flavorpill.

BLOOD PACT: An 18-and-up, artsy DJ party featuring DJs Honey Soundsystem, Rchrd Oh?!, and Lord Kook. Be sure to strap on your boot flasks, kids!

10 p.m. // SomArts (934 Brannan) // $15

CHARLIE HORSE HALLOWEEN THING: Anna Conda will have you drunk and begging for more at the Polk Street party. Drag show at midnight, cheap drinks, long lines for the bathrooms. Party hard, folks.

10 p.m. // Charlie Horse (1723 Polk) //

MONSTER HALLOWEEN: DJ Scottish Andy and her highness Juanita More! host a festive party in the Mission.

9 p.m. // Truck (1900 Folsom) // $5

GNARGOYLE COSTUME BASH: Hightower performs in the Outer Mission. Boo. Eeps! Ack!

9 p.m. // El Rio (3158 Mission) // $5-$7

YELLE: Passion Pit, Friendly Fires, and dive DJs Aaron & Omar open for the shiny, French, pop-tart sexbomb Yelle this evening.

9 p.m. // Mezzanine (444 Jessie) // $20-$30

THE CASTRO: Yes, it is. Yes. It is.

6 p.m. - ? // Castro & Market // free

Oh, and be nice out there, people, for God' sake. No bullyingm raping, or waling around on E. Also, be sure to take loads of pictures. We want to see what you all wore tonight! But most important above all: have fun.

Feel free to post your own Halloween events in the comments.