Picturing Arizona - The Photographic Record of the 1930s - Katherine Morrissey of the department of history will talk about the WPA works on exhibit at the UA Museum of Art as well as her new book. Part of the Artbuzz series. 2 p.m. to 2:45 p.m. Free. UA Museum of Art.
Greek or Treat - You don't have to dress like a falafel, but you should wear some kind of costume if you want to have fun at this student-run carnival. That is, if you're going to take part in the trick-or-treating. 6 p.m. to 7:30 p.m. Free. UA. East First Street between North Mountain Avenue and North Vine Avenue
Nightfall: The Gathering - A perfect activity if terror is what you seek this Halloween. Lasts all weekend. 6 p.m. $19.95. Old Tucson Studios. 201 S. Kinney Road
Scottish Heritage Weekend - Carnival games, jousting tournaments and a jumping castle the size of Nessy (our underwater ally) will be part of this celebration of all things Haggis. 7 p.m. Free. Northminster Presbyterian Church. 2450 E. Fort Lowell Road
'The Changeling' - This 1980s horror movie is about a man staying in a haunted mansion. Part of the International Art Society Film Series. 7:30 p.m. $3. Manuel T. Pacheco Integrated Learning Center. Room 120
Apollo Sunshine - This band mixes folk, electronica, experimental music and indie rock to create a purely unique but extremely catchy sound. Plus, they have a cool name. 11:45 p.m. $3. Plush. 340 E. Sixth St. (21+)
Nintendo Fusion Tour - Fall Out Boy, The Starting Line, Motion City Soundtrack and a bunch of other pop-punk bands with randomly picked three-word names will be there. 6:30 p.m. $20. The Rialto Theatre. 318 E. Congress St.
Nightmare on Congress Street - This music festival will feature acts like Camp Courageous, Neil Hamburger and Abe Lincoln Story. (They just get weirder and weirder, don't they?) 8 p.m. $7 in advance, $10 at the door. Club Congress. 311 E. Congress St.
The Fearless Freaks - This documentary chronicles the evolution of Oklahoma's (and probably Japan's and select places on Mars, while we're at it) favorite indie band The Flaming Lips. 5 p.m. $5. The Loft Cinema. 3233 E. Speedway Blvd.
Octubafest - If you don't mind that attending this event officially makes you a total dork, you might have fun watching all the tubas. 7 p.m. Free. Holsclaw Hall. South end of Olive Pedestrian Underpass, Olive Road.
Iraqi Voices - Two documentaries specifically targeting the media and the government in the war in Iraq will hopefully inform you enough to make up for putting a damper on the rest of your weekend. 7 p.m. to 9 p.m. Free. Aerospace and Mechanical Engineering building. 1130 N. Mountain Ave. Room S202
Sage Francis - This rapper may not be as big as 50 Cent, but he's much bigger than Lil' Bow Wow (physically, of course.) With Sole, Sleep and Solillaquists of Sound. 8 p.m. $15. Club Congress. 311 E. Congress St.
Textbooks - Director Frank Farias of the UofA Bookstore dispells myths about pricing and buying textbooks. Aside from possibly saving you a bit of money in the future, it's also free. Part of the Faculty Fellows Speaker Series. Noon. Student Union Memorial Center, Gallagher Theater. 1303 E. University Blvd.
-Compiled by Andi Berlin.