Yeah... I found this glitch in the NTSC rom, so I'll have to check if it works in the real thing.
Basically, I was doing another run of DKC. I'd gotten up to Temple Tempest and completed the level, but forgotten the first bonus, so I went back in again with Diddy solo.
I picked up the DK barrel and used it to break open the first bonus, and DK came in with me when he was freed from the trapped barrel.
Inside the bonus, I made a mistake and did an early cartwheel attack with Diddy, and got hit by the necky. Diddy froze in place on the edge of the platform. I rolled through the necky and into the pit. I tried pressing start select, but it was too late.
Here's the weird part. Strangely enough, I was not returned to the level. Instead, I was put at the very beginning of Jungle Hijinx.
Anybody want to test this with a PAL or NTSC cartridge?
Edit: After pressing start select, it returned me to the mapscreen with Temple Tempest again...