I've got a sealed Conker's Bad Fur Day that I got at TRU a few years ago on clearance, it's in pretty slick shape, and is only missing a hint of the cellophane on a bottom corner.
I know this game is somewhat in demand for the system, but I'm not totally sure what it's worth (I still can't believe N64 games are worth something, didn't they just come out!?)
Oh, and here are some pictures.
This last one shows the opening in the bottom right corner, the opening is probably about a half inch long at maximum.
Thanks guys, posted this at Nintendo Age as well, but figured you guys know your stuff pretty well, hope this gives a good idea of what I've got.