Whenever you see something like that it's someone screwing up with their transactions. The biggest one I can remember is someone putting 90BTC in fees instead of output. In most cases like this they contacted the pool who mined the block and provided evidence of them owning the transaction and got refunded.
that means most of the high transaction fee are because of the mistakes? that would be a failure if the block reward gone to the unknown miners. 
Probably just a mistype? That's the same as 0.32 BTC per kB, 77 times the current recommended fee of 420000 satoshis/kB.
This kind of mistake already happened before, like this one: https://blockchain.info/tx/6fe69404e6c12b25b60fcd56cc6dc9fb169b24608943def6dbe1eb0a9388ed08 with a fee of 15.68 BTC.
yeah, saw someone paid 2.5 btc in a single transaction fee once, forgot what that was.This kind of mistake already happened before, like this one: https://blockchain.info/tx/6fe69404e6c12b25b60fcd56cc6dc9fb169b24608943def6dbe1eb0a9388ed08 with a fee of 15.68 BTC.
