**UPDATE - December 26, 2009 - If you want additional (and better) information where someone has analyzed the life and times of Mr. Frank Marshall Davis and his potential connections to President Obama, then click the Reformation.org article entitled President Frank Marshall Davis Obama.
Before I get into the conspiracy question of whether Frank Marshall Davis is really Obama's father. Imagine in the Star Wars universe if there was an interstellar internet (a/k/a Disruption Tolerant Networking) where people could talk and chat on a galactic scale. I guess there was a galactic communication system, so let's assume their communications system had something similar to our Internet. How many conspiracy theory and alternative news websites would be posting stories and documents about Luke Skywalker's true lineage? After destroying the Death Star, Luke would have obviously become the "star" of the rebellion. He was also a freakin' Jedi which was like being a rock star with telekinesis in those days.
Considering that there had to be a few people around who knew Darth Vader's true identity as Anakin Skywalker, would it be that difficult for people to make assumptions about this young farm Jedi-in-training named Luke Skywalker who destroyed the mighty Death Star? There would have been numerous websites asking why Luke won't produce his papers showing the identity of his father. Yet despite these obvious connections to the Empire, Luke was still allowed secret security clearances with the Rebellion. Once Luke found out that he was the son of Darth Vader, he did not immediately inform anyone with the Rebellion of this potential conflict and ultimately led the Empire to the Endor Moon in The Return of the Jedi. If it wasn't for the feral Ewoks somehow saving the day, Luke's act of surrender could have been seen as treasonous to the Rebellion with Leia as his accomplice for not disclosing it.
Let's end the fantasy and return back to the real world. Barack H. Obama is our world's rock star today (at least for the moment). He is America's first black president winning a mandate back in November, 2008. However, many people have questioned Obama's background and whether the President has been truthful in disclosing his background. First, it was the birth certificate issue stating that Obama was allegedly born in Kenya. Second, there is the Indonesian dual citizenship.
As a conspiracy theorist and truther to the core, I want to know all the answers. Therefore, I will examine any theory that may be reasonably calculated to lead to admissible evidence. The latest theory still relates to Obama's birth certificate, but it does not allege Barack was born in Kenya. Rather, this theory relates to whether his father is really Barack H. Obama, Sr. or whether his daddy is really Frank Marshall Davis. Here is the Wikipedia information on Frank Marshall Davis.
What is this theory based upon? I do not seen any admissible evidence at the moment, but I do have a vivid imagination