In An Entry with a Bang!, the Americans and Russians announce that they are massively, massively increasing nuke output for the Deus Ex Nukina defense against intruders into the solar system. We're looking at least 10,000 warheads a year, compared to a mere 2,700 (!) per year as US peak production during the Cold War. A mercenary leader converted to Clancy-Earth's side, already appalled by the talk of Nuclear Rearmament since C-Earth alone has many more nukes than any of the Inner Sphere houses, realizes that he needs a stronger alcoholic drink than beer after this.
In The Girl Who Loved, Harry thinks that on the scale where Fleur Delacour and Shampoo are tens, Sailor Pluto is a definite eleven.
One memorable line (and not for the right reasons) from the Harry Potter fanfic, Passion Night: ""IF I GO ANY FASTER WE WILL BE AT HYPER SPEEEEEED!" Lupin shouted trying not to moan while he shouted."
A Digimon Fanfiction, The Interloper. Quite a bit actually in terms of power level, the fanfic shows normal humans, which are, well, normal, then it shows the Digimon, which are much stronger than a normal Human, then it shows the difference between various levels of Digimon, and the major power difference between each one, then there's the Modifiers, humans with powers to modify themselves in the Digital World with little to no limitation, putting them on par with most Mega-Level Digimon, then we see the story's OC, Christopher Van Numen whom stomps everything the fanfic's setting has with little to no effort and whose very skin - let alone his armor - is nigh impenetrable, then we get the villain, Felicia Portal, whom makes Christopher wince in terror, then we have her boss.
Superstarultra dials the randomness of You Got HaruhiRolled! up to 11 for the anniversary chapter, affectionately called "Off the Rails".
In the Discworld fanfic continuum, there is the invention of "Rimwards Howondaland" (based on several unmistakeable hints of its existence in the canon) which is essentially South Africa with all the knobs turned up to eleven, in accordance with Pratchett's Rule Of National Stereotyping. The Black Sheep deals with this place and its people. As a national stereotyping bonus, Sto Kerrig (Holland) also gets full coverage of its national stereotypes...
The Black Sheep looks at the relationships between the Discworld expies of South Africa and Holland through a comedy-thriller in which a Rimwards Howondalandian con-man has to be brought to book. As can be expected in a Pratchett pastiche, both countries are taken way past eleven in terms of National Stereotypes.
A.A. Pessimal is responsible for much of this. Other Up To Eleven nations are Far Überwald (Russia), Aceria (Canada and latterly the USA), Hergen - Ireland; Toleda - Spain; a strange border region between Sto Helit and Sto Kerrig - Belgium; Ghat - India; and so on.
Total Drama Island, by Gilbert and Sullivan is like a song fic, but instead of using one song it uses 70 percent of the total verse content of 14 comic operas—some 8,000 lines of verse in all. Up to eleven? More like up to eleven hundred.
Ultraman Moedari often does this with the powers of every single character except the titular protagonist.
Since exams were only two weeks ahead, Hermione put her foot down that this was the absolute minimum for 'real' revision needed, after the soft 'revision phase' of the last weeks. Harry and Neville had a different interpretation of soft, but soon realized that Hermione really had a 'hard' setting on her study scale if she was allowed to set the tone. For them, it was like she turned it up to eleven, then ripped out the scale, and added a hand-crafted twelve to it.