These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Alas, Poor Scrappy: In retrospect, the super bowl performance was such a disaster it's not difficult kind of feeling bad for them.
Hell, 2011 was not a good year for the Peas. Aside from the aforementioned Super Bowl performance, "The Beginning" became their lowest selling and most critically panned album in their career, The Black Eyed Peas Experience was not well received at all, hatred of them was from all sides (even from some of their own fans) and to top it off, they announced they were going on hiatus, which is still ongoing. Damn.
Critical Dissonance: This is especially true for their song "My Humps", which was savaged by critics but still managed to become exceedingly popular and even won the 2007 Grammy Award for "Best Pop Performance by a Duo or Group with Vocal", in addition to the music video winning a VMA for "Best Hip-Hop Music Video."
Incredibly enough, The E.N.D wasn't very well-received, but the album singles were.
Dork Age: Two critically panned albums and one unsuccessful album later, they'll probably be stuck in one for a while. Even better, they went on hiatus.
Ear Worm: Hear any song by them, and it will play in your head all day long!
Face of the Band: Either Fergie or will.i.am. Good luck finding an average fan that knows the names of apl.de.ap and Taboo.
Hype Backlash: They experienced this hard as their 2011 Super Bowl performance was panned by critics and viewers alike; in the matter of two weeks their massive popularity was almost completely destroyed.
The relentless hype/advertising for their halftime show during that year's NFL playoffs probably contributed a lot to how it got so badly savaged.
Irony: The 2005 song 'Gone Going' is about an artist who used to write meaningful songs, and now produces shallow, meaningless songs about wealth and partying after making it big. Fast forward a few years, and the Black Eyed Peas can be described very similarly.
It's Popular, Now It Sucks: The group when comparing to before after adding Fergie to the lineup, which is when they switched to a more pop oriented sound and became more commercially successful.
I Am the Band: Will I Am's performance at the Silver Jubilee kind of confirmed this!
Moment Of Awesome: The Peas' manager punching out Perez Hilton. There's also their performance at Super Bowl XLV, where they drop onto the stage from the ceiling.
Mondegreen: Many people misheard the chorus of "Imma Be" as "I'm a bee".
Painful Rhyme: Their later albums are chock full of verses where every line rhymes words that end in either "-tion"/"-sion", "-ing" "-een", "-er", "-ay" or "-o". This leads to excruciating lines on The Beginning, such as "audio and visual, can't see me – invisible" and "this shit's money nigga this shit green / this shit's frightening – Hallowe'en."
Sampled Up: "Misirlou" by "Pump It" (Dick Daleis not amused), as well as Sexual Harassment's "I Need A Freak" by "My Humps". The latter of the two was the subject of a lawsuit that began even several years before the song's release due to the sample being used without authorization.
The Scrappy: Fergie. Not just in Black Eyed Peas, but arguably hip hop as a whole.
Signature Song: "I Gotta Feeling". For their solo careers, Fergie has "Big Girls Don't Cry" while will.i.am has "Scream & Shout".
Snark Bait: They're derided as everything wrong with EDM-pop-rap today. Though as they have went on hiatus, Pitbull seems to have replaced them in this regard.