EaVil, William Sides Atari Party, Hate Moms, The Buoyant Seas and more @ Hotti Biscotti

A cavalcade of colorfully-named, Technicolor-hued bands, primarily electronic in nature, will enhance the ambience Hotti Biscotti (3545 W. Fullerton), bringing about drinking and dancing (or head nodding). Included on the bill: William Sides Atari Party, EaVil, The Buoyant Sea, David Diarreah, Hate Moms, and others. 9 p.m., no admission charge listed.

Social Junk, Unseen|Unknown, Abduction @ Enemy

Tonight, Wicker Park venue Enemy (1550 N. Milwaukee Avenue, 3rd Floor) hosts three bands with an emphasis on drone, folk, and esoterica: Social Junk (from Ashland, Kentucky), Unseen|Unknown, and Abduction (both from Chicago). Abduction features Neil Jendon, ex-Zelienople. 9 p.m., $5 at the door.

Movies in the Park

The Chicago Park District presents Movies in the Park, a summer-long screening of classic and contemporary films in Chicago parks. Tonight's screenings: Happy Feet (PG) at Humboldt Park (1400 N. Sacramento Ave.); and Kicking & Screaming (PG) at Blackhawk Park (2318 N. Lavergne Ave.); and also at Rowan Park (11546 S. Avenue L). The screenings start tonight at dusk, and are free and open to the public. For a complete schedule of movies check out the Chicago Park District Website.

Black Harvest festival opening night @ Film Center

The Gene Siskel Film Center presents its 13th annual Black Harvest International Festival of Film, Video, and TV. The festival opens tonight at 7:30 PM with a screening of short films, a presentation of the festival's annual Deloris Jordan Award for Excellence in Community Leadership, and a reception with food provided by Whole Foods Market. The festival runs through August 30; see the Film Center's Website for a complete schedule. Film Center: 164 N. State. (312) 846-2600.

Midnight Yoga @ Bloom Studio

Looking for an interesting alternative to the loud, smoky bar scene? Do something good for yourself and participate in a candlelight yoga class accompanied by live music. It's a much better way to celebrate the start of your weekend. 10:30pm-Midnight at 4663 N. Rockwell. Pre-registration is required (admission is $20) and can be done by calling 773-463-9642 or by visiting the website.

Yearly Kos Convention @ McCormick Place

Political junkies of many stripes converge on Chicago for this conference of bloggers and grassroots/Internet activists. Politicians such as Howard Dean and Dick Durbin are expected to speak, as well as Gen. Wesley Clark. For more information, visit the website.

Jazz Dance World Festival @ Harris Theater

This 4-day festival features performances by dozens of jazz and modern dance companies from Chicago and around the world. Tickets cost $45 to $60 and performances begin at 8 PM. 205 E Randolph Drive. For more information, call 312-334-7777 or visit the website.

Lollapalooza

Lollapalooza returns to Grant Park on August 3 - 5. For ticket (and other) information, visit the website.

The lineup for Friday August 3rd features: Ben Harper, Daft Punk, LCD Soundsystem, Femi Kuti, the Black Keys, Satellite Party, G. Love, Blonde Redhead, Son Volt, the Fratellis, and many many more.

BFF Show @ Rotofugi Gallery

Rotofugi presents the BFF Show in its gallery, 1955 W. Chicago Ave., featuring art by Blutt, Joey D, Joey Potts, Ken Keirns, Peabe, Phoneticontrol, Revise CMW, Shawnimal, Veggiesomething and Yunicorn, tonight from 7pm to 10 pm. Free snack cakes and sodas will be available (if you can battle through the crowds to get to them) and DJs Genghis Won and J. Lee will spin.

Opening Reception for Unit 2 Art Collective

Tonight is the opening reception for the Unit 2 Art Collective group show, featuring works of sculpture, drawing, video, painting and photography from fourteen Chicago artists. The opening reception will take place from 6:00-10:00 p.m. at 1040 North Halsted.