MacTavish, Billy
Key grip, dolly grip, crane grip, rigging grip, set grip, or electrician/lamp operator.
http://www.geocities.com/billymactavish/

Handrail Benders
Offers site rails, wall rails, stair rails, and guard rails.
http://www.handrailbenders.com

Ruby for Rails: Ruby Techniques for Rails Developers
Ruby for Rails by David A. Black gives would-be Rails developers an understanding of what they're actually doing when they write a Rails web app. It shows how Ruby techniques expand the horizons of what can be done in Rails
http://www.manning.com/black/

Gearhead Grip and Electric
Grip and electric rentals and services for film and video production. Grip trucks, lighting packages, generators, and dollies. Experienced crew available. Based in Portland, Oregon.
http://www.gearheadgrip.com/

The Rails Way
Core Rails committers answers user submitted questions about Rails.
http://www.therailsway.com/

Riding Rails
Official Ruby on Rails team group blog; essential for learning of security updates, and overview of full Rails community.
http://weblog.rubyonrails.org/

ELB, Inc.
Manufactures Spin Rails and Reactor Rails, which are both skateboarding grind rails.
http://www.elbinc.com

Tubular Specialties Mfg., Inc.
Manufacturer of component and custom railing systems, handrails, guard rails, picket/panel rails, glass rails and architectural metal work.
http://www.calltsm.com/

BarnDoor Lighting Outfitters
BarnDoor Lighting Outfitters is Connecticut's Premier Rental House providing Lighting and Grip Rental for Film, Video, Photo in Connecticut and New York. Gaffers, Grips, Grip Trucks, Grip Vans, HMI, Chimera, Strobe lighting, Stage, Studio, Dolly, Kino Flo
http://www.gripandlighting.com

Distributing Rails Applications
How to turn Rails programs into standalone programs, via Tar2RubyScript and RubyScript2Exe; not the proper way to deploy Rails programs on production servers; by Erik Veenstra.
http://www.erikveen.dds.nl/distributingrubyapplications/rails.html