| Fun Bands at Navy Pier Beer Garden nightly. |
| Latino Film Festival at Various locations. |
| STD Awareness Month. |
| 10:00p Drum&Bass night at SmartBar. |
| Bicycle Day. |
| 7:30p Group Skate at Daley Plaza. |
| 10:00p Blacklight Blackout at Exit. |
| Start of Taurus. |
| 7:00p Gamma Phi Circus at Illinois State University. |
| 9:30p "Twisted" at Berlin. |
| 10:30p Vaudezilla! at Stage 773. |
| * Earth Day. |
| 10:00p Monday Night Ride at Lincoln Monument. |
| Talk Like Shakespeare Day. |
| 6:00p Chi Hack Night at 1871. |
| 6:30p Millennium Park Movies (Tu). |
| Disclaimer. |
| Administrative Professionals Day. |
| Parental Alienation Awareness Day. |
| * Take Your Child to Work Day. |
| 6:00p Atomic Sketch Event at Green Eye Lounge. |
| Arbor Day. |
| 5:45p Critical Mass at Daley Plaza. |
| 10:00p Bittersweet at Berlin. |
| America's Beauty Show at McCormick Place. |
| 9:30a MS Walk. |
| Walpurgis Night. |
| May Day. |
| 6:30p * Full Moon Fire Jam near lake south of Foster. |
| 9:00p Movieoke at Whistler. |
| * National Day of Reason. |
| 5:45p Southside Critical Mass at Nichols Park Plaza. |
| Cinco De Mayo. |
| * International Day of the Midwife. |
| 10:00a *** Kids and Kites Fest at Montrose Park. |
| 11:30a Polish Constitution Day Parade at Downtown. |
| 10:00p Madonnarama at Berlin. |
| 7:00p Tributosaurus at Martyrs'. |
| Harry Truman's Birthday. |
| V.E. Day. |
| **** Mothers' Day - THANXX FOR EVERYTHING MOM!!! |
| 2:00p CircEsteem Spring Circus at Alternatives. |
| WAY too much great theater and comedy and dance to cover at Hundreds of city locations. |