Ebil McClucky
DAT ***
The hardest level for me was building the houses in Final Fantasy Fables: Chocobo Tales.
Jiminy's Journal in KH2
The hardest thing I came across is trying to beat Freya on 4D in Star Ocean Til the End of Time. She has a whooping 60,000,000 HP and can kill you in virtually 1 hit. Her Ether Strike Attack is automatic death to anyone that gets hit and that attack has a HUGE area of effect. Because using skills consume HP, you need a godload of recovery items to be able to last that long. This one battle takes over an hour! The longest time I managed to survive was like 1 hr 10min and then she destroyed me! >_<
The very last fight of FF 7! (I'm kidding)
Probably Event 50 of SSBM. I almost threw a controller at my TV.