[[quoteright:343:http://static.tvtropes.org/pmwiki/pub/images/Dr_Demento_9513.jpg]]

Dr. Demento (AKA Barret Eugene Hansen) is a disc jockey and ethnomusicologist who achieved fame and/or infamy with his long-running syndicated radio program which features strange and bizarre novelty tunes of every type and description. Along with reviving popular interest in performers such as Music/SpikeJones and Music/TomLehrer, he introduced Music/WeirdAlYankovic to the world, which is pretty much a lifetime achievement in itself. Other performers often associated with his show include Music/DaYoopers, Music/NapoleonXIV, and Music/TheGreatLukeSki

The show continues to air weekly via the Internet.

He is [[NoodleIncident reportedly]] one of [[WesternAnimation/TheSimpsons Bart Simpson's]] [[SitcomArchnemesis arch-enemies.]] Off the air, he has an extensive knowledge of music history, and has written articles, essays, and liner notes on a wide variety of music subjects.

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!!Tropes associated with the good Doctor:

* AlliterativeName
* AntiChristmasSong
* {{Bowdlerise}}: Tends to bleep out naughty words on his broadcasts.
* TheCameo: Often turns up in Weird Al music-videos.
* ChristmasInJuly
* FilkSong: He at least borders on this genre at times, calling it "Dementia".
* InnocentInnuendo
* MorallyAmbiguousDoctorate: Some of the songs he plays can probably cause brain damage.
* MorePopularSpinOff: How he got his start.
* NoHitWonder: Not Demento himself, but many of the bands he plays; DaYoopers are a prime example.
* SigningOffCatchPhrase: "Stay demented!"
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