I've noticed the only conspiracy theory that everyone seems to at least believe in is the JFK assassination.
Bit late on this but no, not really. Conspiracy theories have been debunked in a pretty thorough manner and there's a couple of recent monster books taking them apart. While I am not a specialist, there's a number of very plain facts easily understood -like Oswald trying to kill General Walker a few days before, his decent proficiency as a shooter when in the Marines, the testimonies from pretty much anyone having visited the Dallas library that the "sniper nest" was in fact very close and perfectly aligned for the shots, his wife's testimony (and all other testimonies) before the Warren commission, that Jack Ruby would never have had a chance of killing Oswald if the latter didn't request a late minute change of clothes (transfer then went late), etc...- that will highlight just how plausible the "official theory" of a lone shooter going for an opportunity target actually is, contrary to what conspiracy theorists would have you believe, just like they hold so dear to the "magic bullet" moniker when any amount of cursory research will show anyone that the bullet didn't do anything extraordinary (this has been the opinion of anyone versed in ballistics I read) and that in fact the shot can in fact be replcated in live conditions (I don't have the video at he ready but it does exist).
All discussions on the matter have raised for me the usual red flags for kookery when you realize that conspiracy theorists will handwave the massive amount of documented evidence to rely on wild gossips (Like alleged things said by Nixon in a party a few days before, etc...), baseless speculation and interpretations of silent, grainy 8mm footage (My favorite is the guy who claims that the limo driver is the one that killed Kennedy, you can see his sidearm flash on the Zapruder film when he turns around to kill JFK !), trotting out constantly the same old disproven canards and refusing to see the big picture.
That being said, Oswald is a fascinating character with a non mundane personal story, and he is a good canvas for some weird theories (one is the book that claims that it's not Oswald that came back from the USSR, but a spy body double). But really, all I have read about him paints the figure of a marginal and unbalanced character, one that would be a major liability for any high level, nefarious assassination.
