Remember Pokemon Red/Blue on good'ol GBC? Remeber that dungeon right before the Elite 4? Rocky Tunnel or something, can't remember exactly.

MAN, that was annoying. You kept pushing those thousands of stupid boulders around to hit thousands of stupid buttons while thousands of stupid wild Pokemon kept showing up at every 3 steps. I haven't touched that game for like, years, but that place still chases me in my nightmares.

That, and generally all dungeons with too many doors and non-linear. I like to search everything. So, if I search one place and find out that it's the right one, go aaaaall the way back and search all the other freakin' places. Ack.

they make good training spots though