On the drive in this morning I was pondering whether to replace my ageing Heckler (idle dreaming admittedly). Whilst doing so I started to think about how bikes have developed from my first NORBA geometry Rockhopper back in ~1990.
So my question is: What interesting bike or component designs exist (past and current) and what makes them interesting if it isn't apparent?
Pugsleys and Moonlanders (very "now" it would appear)
Banshee Spitfire (and similar) - Short rear travel, slack HA, pedal powered missile. When it was first proposed a few years ago it was fairly radical. Now it's design seems to be becoming a bit more mainstream.
O-O 456 and all it's descendants and cousins. I guess for much the same reason as the Spitfire.
Delta 7 Arantix - Carbon fibre cobweb bike.
Jones bikes - geometry and implementation
Shimano airlines - would have been nice if they worked and were cheaper!
Pro flex stems - interesting idea but......
USE Sub forks
Gearbox transmissions (a la Nicolai)