Just trying to get the ball rolling here. A list of some of the gear I cherish, and some that I wouldn't buy again, even on a supersale.
Love:
Sporthill's 3SP pants and 3SP tops - Amazing fabric, great prices (www.sporthill.com).
BD Express Ice Screws - Once you use these, there is no going back. Honorable mention to Smiley's old screws with the coffee grinder.
Sony PC100 Camcorder - Amazing toy; digital video with stunning picture quality. Also takes megapixel stills. A scant 1 pound and fits in any large pocket.
Disposable cameras - Can be taken on any climb, and if you drop it off El Cap, hey.
Malden Mills - For the wonderful fabrics they make (all things Polartec) and being such an ethical company. Powerstretch is my favorite fabric of theirs.
Shoeller Dryskin Extreme, and Skifans - Amazingly durable, useful fabric. A one piece does all barrier to the extremes. Seems to work in all conditions except rain, and when heavy thermal is needed under a shell.
GPS - Your tax dollars at work!
Hate:
What's happened to The North Face.
2-ply Gore-Tex. Perfect for a rainy walk from the car to the mall.
Core-Vents. It's pit zips or nothing, IMO.
Full jacket or pants Winstopper. Works good as a vest, or hat, or especially gloves though.
USFS Logging policies and NW Trail Pass program.
GW Bush's Public Lands proposals (more logging, drilling in Alaska, etc.)
Magnesium for firestarter. The guy that sold this idea must still be laughing.
What Quokka did to MountainZone.