Resources

Books
Arcade Fever: the Fans Guide to The Golden Age of Video Games. by John Sellers. Available from Amazon
Arcade One: Illustrated Historical guide To arcade Machines
by Richard M Buesche. Available from Amazon
Arcade Treasures: With Price Guide
by Bill Kurtz. Available from Amazon
The First Quarter: A 25-year History of Video Games
by Steven L Kent. Available from Amazon

Emulation Links
Mame.net  Official MAME site
Mame.dk  Rom downloads
Mameworld  General mame info.
Retrogames Very good general info on all things to do with emulation. 
VisualPinball  A simulator of original pinball tables; VP can also be used in conjunction with PinMAME (an emulator of pinball boards - scoring, sounds, etc)

Newsgroups
alt.games.mame.  Newsgroup website: tombstones. (Thanks to DD - God bless his dungeon -  for providing this webspace)

Construction and Restoration Links
Arcadecontrols: Devoted to building arcade controls and cabinets.
Randy Fromm  Advice on working with Plexiglass

Artwork
Arcade Flyers  Devoted to original flyers
KLOV  Killer list of video games. Provides graphics (cab pics, etc) and notation on  arcade games
Dragon's Den  Quality Side Art files which can be printed or used as a reference for  hand painting cabinets
MassiveMame  Marquees ready for printing
Andy's Instruction Cards  Original cocktail machine artwork ready for printing

Suppliers
Happs Controls  Joysticks, buttons, coin doors, T-mould….
I-PAC  Interface (PC/Mac to arcade controls) 
Electronics from: Radioshack (US)  / Dicksmiths (Australia), or similar stores
Appliances: TV from the usual places
Hardware: um hardware store?
Kitchen/Cabinet makers: find these in the Yellow Pages, they generally have a wide  range of T-Mold available. (T-Mold is also available from Happs)

Projects
Craig's Roswell Project
Bob's Coctail Machine
Kevin's Defender Project
Retrocactus!
LuSiD's Arcade Flashback
Paradise II