The pairing involving Itachi Uchiha and Deidara from the Naruto fandom. Please, do note, that it is a proven fact that Deidara is male, fucktards, so ItaDei is classified as yaoi. In most fanfictions, Itachi is seme, and if not, you are mistaken for DeiIta. Also known as the SasuNaru for Akatsukitards and/or anti-Sasuke activists, ItaDei has yet to become popular within the Naruto fandom. But hell, its damn hot.
Also note that the ItaDei fandom is miniscule, as in Flava Flav tiny, but we are growing. Also, it is no where near as large as it's 'rival', SasoDei.

The pairing and shipping of Shikamaru and Temari from the Naruto anime and manga. Both characters are intelligent analytical types who seem to have been linked in the story. They have both rescued each other from death and their interaction usually consists of playful bickering which can be interpreted as flirting. The men in Shikamaru's family are attracted to strong-willed "troublesome" women like Temari.

One of the most popular pairings in the Naruto fandom due to its many hints both in the manga and anime. An example of a hint is in the beginning of Part 2 of the manga. Naruto sees Shikamaru with Temari and believes they are on a date. A similar scene happened earlier in the manga with Kakashi believing Asuma and Kurenai were on a date. Asuma and Kurenai were later married.

Taken from the first names of the two members of one of the strongest shonen-ai/yaoi canon pairings for the anime 'Naruto' from ShonenJump.
The two boys (the primary protagonist Naruto Uzumaki and his rival Sasuke Uchiha,) were forced into an accidental kiss in the third episode of the anime (though Cartoon Network edited it out).
This has inspired one of the greatest fandoms known SasuNaru into a search ending would give you millions of results.
The name that is placed first is of the SEME or 'attacker' and the name second is the UKE or 'reciever'. I will not go into details. You have imaginations. Use them.
SasuNaru is more popular than it's alternate NaruSasu.
I really don't see why.
SasUKE.

One of the main characters in the anime/manga series "Naruto". When he was younger, he witnessed the murder of his entire clan at the hand of his sexy older brother, Itachi Uchiha. As a result he is very angsty and emotionally unstable, and desires revenge on his older brother at all costs. His teammates are Naruto Uzumaki (his best friend/rival/gay lover), Sakura Haruno (his good friend, who has a crush on him, unaware of his gayness), and Kakashi Hatake (his sensei/teacher/father figure).

Just as Naruto starts to work his way into Sasuke's heart, Orochimaru (the son of Lord Voldemort and Michael Jackson), who desires the bloodline limit of the Uchiha clan (the Sharingan), approaches Sasuke during the Chuunin exams and gives him a hickey--er, Cursed Seal to give him a taste of power and put him back on the path of revenge. As a result, later in the series Sasuke joins Orochimaru, who begins to train/molest him, so he can become strong enough to kill Itachi.

Despite what rabid fangirls wish to believe, there is no evidence that Sasuke is heterosexual. Quite the opposite, actually. Sasuke shows no interest in females, despite having legions of fangirls within the series who he could easily get into bed if he desired. Fangirls like to use the "I want to restore my clan" line as proof that Sasuke is straight, despite the fact that "restore my clan" is a very vague phrase and Sasuke has done nothing to back up his words (IF restore clan = make babies).

Nearly everyone...

A fan pairing from the Manga/Anime Naruto. Gaa is Gaara of the Desert and Hina is Hinata of the Hyuuga clan.

An anime/manga that once had a palatable plotline and interesting characters, which has run too long and been raped by fandom. Now the victim of fanfictions, it has passed the peak of popularity and is mostly yaoi fodder for lonely teenage girls.

ItaHina is the shipping of Itachi and Hinata. Common in the fandom of Naruto.