The Hare Krishna movement is essentially an offshoot of Hinduism, as is Buddhism- the three are interrelated, and referred to as the Vedic religions, as Judaism, Christianity and islam are all related, and referred to as the Abrahamic religions. You have to be born a Hindu, but anyone of any race can be a Buddhist or follow the Hare Krishna movement- all three use various Vedic texts interchangably, like the Baghavad Ghita, Ramayana, Rig Veda or Dammapaddha.
For me, the most batshit insane one is Scientology, as it's a dangerous cult that uses mind-control, and was founded by a paranoid loon who made a bet that he could start a religion, and promptly nicked a lot of Aleister Crowley's ceremonial magic ideas while he was illicitly humping the wife of one of Crowley's lodge masters. And they actively hunt down people who leave the sect, and make life generally miserable for anyone who thinks of leaving.
Pastafarianism and the flying spaghetti monster is just some clever-arsed construction by vocal atheists, who think the ridiculousness of the idea is a perfect pisstake on what they perceive as the ridiculousness of other established religions. it's not silly as such, and it isn't really a religion either- just ever so slightly smart-arsed and pathetic.
Forks Over Knives!
First they ignore you,
Then they laugh at you,
Then they fight you,
Then you win.- Gandhi.