Some unusual redirects that I've encountered:
- 3889th millennium BC → List of decades, centuries, and millennia
- Bolzano-Bozen-Bulsan-Bocen-Boceno-Bolzan-Bauzanum-Bocenas-Bulsaun-Bolzanu-Buzzanu → Bolzano
- Electronic voting in Estonia and see also: → Electronic voting in Estonia
- Irish, The, (in countries other than Ireland) → Irish diaspora
- Joe Biden's uncle who got eaten by cannibals → Family of Joe Biden#Maternal
- Knights who say Ekky-ekky-ekky-ekky-z'Bang zoom-Boing z'nourrrwringmm → Knights Who Say "Ni!"
- The largest integer that has an entry on Wikipedia → Graham's number
- The smallest positive integer that does not have an entry on Wikipedia → Interesting number paradox
- The stupid content tracker → Git
- There is no such thing as "British English" → British English
- The Thick of Itoldid=141618068 → The Thick of It