Kaboom
Kaboom is an onomatopoeic term representing the sound of an explosion. It may also refer to:

Film and television
Kaboom (film), 2010 film directed by Gregg Araki
"Kaboom" (Parks and Recreation), episode of Parks and Recreation

Books
Kaboom (book), Iraq War memoir by Matt Gallagher (2010)

Theatre
Ka-Boom!, off-Broadway musical (1980)

Music
Kaboom! (album), album by I Fight Dragons
KFOG KaBoom, yearly concert in San Francisco sponsored by KFOG
"Kaboom",  unreleased song co-written by Lady Gaga (2008)

Video games
Kaboom! (video game), Atari 2600 video game
Kaboom: The Suicide Bombing Game (also known as Kaboom!), flash game

Food
Kaboom (breakfast cereal), produced by General Mills

Organisations
KaBOOM! (non-profit organization), a U.S. non-profit organization that helps communities build local play-spaces for children
KaBOOM! (publisher), a U.S. comics publisher
Kaboom Studios

College mascot
Kaboom, the mascot of the Bradley University Braves

Other uses
Kaboom, bathroom tile cleaner manufactured by Church and Dwight
KaBoom (candy), the original name under which the candy Wonka Xploder was released under in the U.S. in 2000 and UK in 2002
KaBOOM Ka-Band Objects Observation and Monitoring System, NASA system for detecting and tracking near-Earth objects