Sune

The term Sune; (soonay), was coined by Lars Petrus for his method, and is the most widely recognized name for the sequence of moves and the case. Sune is a male name in Sweden and is a iron age form for 'the son', in mordern Swedish that is 'sonen'.
The mirror/inverse alg/case is named Antisune (or Anti Sune). Using double layers for the first and last moves it is called a Fat Sune (Rw U R' U R U2 Rw').
Contents
Algorithm
Sune is a 2gen algorithm that affects the last layer of a Rubik's Cube, and can be applied to other puzzles.
The Sune is most canonically written as
Alg  R U R' U R U2 R' 
There are many algs related to and/or derived from the Sune, such as its inverse, the AntiSune.
The Sune can be written as a pure commutator, but is most commonly recognized as a conjugated commutator or a sequence of two commutators.
Usage of the algorithm: Most often as an OLL in the Fridrich Method or a CO for any cube, but also as a COLL in the VandenberghHarris Method, a CLL, a ZBLL, and besides that you can use it to to do 3cycle edge permutation if corners are ignored, and more.
Case
All cases of the last layer that has three corners twisted is a 'Sune case' (for the OLL usage).
Variants
 The Sune is written as
Alg  R U R' U R U2 R' 
 Its inverse, the AntiSune (also known as Sune') is written as
Alg  R U2 R' U' R U' R' 
 An other variant is the Fat Sune, written as
Alg  r U R' U R U2 r' 
 The Fat AntiSune, written as
Alg  r U2 R' U' R U' r' 
An alternative name: the AntiChair
AntiSune is also known as the chair. This is because of a famous beginner mnemonic device. This mnemonic device consists into repeating this little story: "He stands up (R), goes far away (U2), his chair falls (R'), he comes back next to his chair (U'), he straightens his chair (R), he goes back on his chair (U') and he sits down (R')." Logically, as AntiSune is also called Chair, AntiChair is an alternative name of Sune.