Jhene Aiko (Courtesy of Instgram)

There is no greater mystery in the Song Of Ice And Fire universe than Jon Snow's parentage -- check out the full post for more details!
(Kit Harington as Jon Snow courtesy of HBO)

Azor Ahai is a legendary figure who, 8,000 years prior to Aegon's Landing, defeated the Others (White Walkers) with a sword of fire called "Lightbringer." According to Melisandre, Azor Ahai will be reborn amidst salt and smoke to defend the world once again, this time from the Red God's nemesis, the Other. Melisandre clearly believes Stannis to be Azor Ahai reborn -- "the prince that was promised." However, Maester Aemon (Targaryen) believes it to be Daenerys, and many fans think it will be Jon Snow.
However, Victarian Greyjoy, Aegon VI Targaryen, and Rhaegar Targaryen are also considered to be Azor Ahai reborn. (Though when Robert killed Rhaegar, he doomed Westeros.) (Art courtesy of Amok)

Some believe that Tyrion Lannister is actually a Targaryen, his parents being Joanna Lannister and the Mad King, King Aerys II Targaryen. Aerys certainly thought Joanna attractive, and he had no real qualms about rape. In the books, Tyrion's hair is described to be so blond as to be white -- see: Daenerys, Viserys, and every other Targaryen -- and as having one green eye, one black (Daenerys' eyes are written as so violet they're nearly black). The theory is a bit out there, but not as out there as the Mad King was!
(Peter Dinklage as Tyrion Lannister, courtesy of HBO)

There are a few vague theories floating around about Sansa. For one, some say she will marry Aegon VI Targaryen, turning her luck around and finally becoming a queen. If Jon Snow turns out to be a Targaryen, others believe that they will marry. Finally, others believe that Sansa will get out from under Littlefinger's thumb by getting hers and killing him dead. Fingers crossed for that last one, really.
(Sophie Turner as Sansa Stark, courtesy of HBO)

Some say that Lord Varys is actually a woman, and Aegon is not a Targaryen but the son of Varys and Illyrio Mopatis. All of Varys' machinations have been to get Aegon on the throne, not because he is a Targaryen, but because he is their son. What? I don't know either.
(Conleth Hill as Lord Varys, courtesy of HBO)

Petyr Baelish is one sneaky dude. Littlefinger has been behind a lot of chaos in Westeros -- including Joffrey's death -- but could he have also been behind Ned Stark's death? Some say that, while it was Joffrey that killed Ned, it was Littlefinger who convinced him of the idea. And hey, if it's true, and Sansa ever found out, she would have no qualms killing him.
(Aiden Gillen as Petyr Baelish, courtesy of HBO)

Not too much is known about Benjen Stark in either the books or the HBO series, but there are several theories surrounding him nonetheless. Many believe (or hope) that he did not actually die went he went ranging beyond the wall, but that he is just biding his time, waiting in the wings to save one of his nephews in the way-too-North. Other say that he is Coldhands, a mysterious figure from beyond the wall who helps Samwell and Gilly, who is dressed all in black like one of the NIght's Watch, dead yet still alive.
Check out the full post to vote for your favorite fan theory!
(Benjen Stark as Joseph Mawle, courtesy of HBO)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)

Anna Faith Carlson is 'Frozen's' Princess Elsa (Courtesy of Instagram)