I swear I thought I was the only person who didn't hate Nuts & Bolts, lol.
I mean it's a terrible Banjo game but it's a pretty cool little construction kit and physics playground. I enjoyed it for what it was.
Sceneman and I are both in love with it; we must have voiced it before you (cough) joined the forum.
You're 100% right. It's a bad Banjo Kazooie game; I tried playing it like a platformer before the game gave me enough pieces to make interesting stuff, and as a platformer, it's absolute crap. Swimmy controls, unclear player metrics, and a camera which needs more hand-holding than a bipolar girlfriend. As a construction kit, it's unmatched.
I think that's a hallmark of Rare's last-gen development efforts: It's never clear for whom they are designing. Once the design is clear, it's genius, but it's rarely a well-worn genre and only rewards people who are willing to stick it out to find its core.