In The Invisibles, Dane (a white English teenage guy) is a big fan of Gangsta Rap, and he asks Boy (a young African-American woman) whether she likes it. She says it's okay, but she prefers European techno. Later, we find out that her brother was an actual gangsta rapper.
Buck Swope, Don Cheadle's character in Boogie Nights, is a fan of country/western music, to the point that he wears cowboy hats and shirts with fringes (the whole Roy Rogers getup). Remember, he's played by Don Cheadle
The Big Bang Theory: Rajesh is not too fond of Indian food, while Howard takes a perverse thrill from not keeping kosher.
Sheldon was raised in Texas, but his accent only appears when upset, he looks down upon farmers, hicks etc, as a reclusive Hollywood Nerd is the farthest possible thing from the athletic, sterotypical cowboy, and is a staunch Hollywood Atheist despite being raised as an Evalanical Christian. Bernadette was Raised Catholic, and thus is a Covert Pervert whom couldn't wait to introduce her Jewish boyfriend to her mother.
In Angel, Gunn doesn't start out this way. Then he sees a production of Giselle and falls in love with Ballet.
And THEN The Powers That Be filled his brain with lawyer skills so he could contribute to the team and he ended up singing a lot more Gilbert & Sullivan than he would've liked.
By Time Lord standards, the Doctor is one hell of a rebel. They were staid, egotistical, and overly formal, not to mention were somewhat stagnant from a cultural standpoint. He, on the other hand, uses time travel to broaden his cultural perspective as far as possible, has (for the most part) no pretensions of being better than anyone else (aside from mentions of having Seen It All and his own genius, both of which tend to be quite true) simply because he was born a Time Lord, and he's so unorthodox and informal he (as well as his rival, The Master) is considered (from their point of view) the gold standard for a Time Lord Cloud Cuckoo Lander.
Eminem was arguably this for rap music, as he was the first white rapper to really break into mainstream respectability (sorry, Vanilla Ice and Beastie Boys).
The Runaways are a 1970s all-female hard rock band, and Joan Jett and Lita Ford have both made a breakaway success. It was quite rare at the time for women to perform hard rock (as opposed to soft rock or pop).
From about the same time period was Pat Benatar. Then there was also Heart, but only the singers were female.
Dixie Peach is a black DJ who presented a soft rock show on BBC Radio 1 in the 1980s.
The whole Riot Grrrl movement could be seen as an example of this. After all, they are a group of feminists performing Punk Rock (a traditionally male-dominated genre).
Sinéad O'Connor, while her musical genre has always been strictly pop, has been the subject of controversy with her baldness — and she steadfastly refuses to let negative public opinion influence her decision.
Living Colour aren't really this trope because they are funky hard rock, but are commonly called metal.
Sepultura are a metal band from Brazil. Before them, the only music Brazil was known for on a widespread level was bossa nova. Thanks to Sepultura's influence, magazines started covering about metal from around the world rather than just the US, UK and Germany. Now we have the likes of death metal bands from India and Iran and power metal from Russia and Italy.
There was heavy metal in Russia when there was still an Iron Curtain.
P J O'Rourke interviewed one of the Polish punk bands for "Rolling Stone" and commented that while they were saying the same things as a Western punk band - going on about what a Crapsack World they lived in - a Western band would be saying these things defiantly, but the Polish band sounded resigned, as though they were just stating the obvious.
Many German metal bands formed out of a desire to make their country known for something apart from Schlager and Europop. They wanted to make it distinctive, and as a result German metal is heavier and scarier than anything else until Black Metal from Norway became famous a few years later.