Here's a picture of me from a few years ago. I'm standing in my old office at Williams Electronics Games, Inc. Note the backglasses on the wall.
Here's a picture of Dwight Sullivan (left), Pat Lawlor (behind), and me on the night that we put the first Roadshow game on test.
Here's a picture of me from Pinball Expo 1997. Dopey grin and all. Note all the cool stuff we sold at the Williams booth and the fistful of cash I'm holding.
This is a game a friend of mine put together out of junk parts. Don't know whether it's a "JackAway" or a "Geta*Bot".
Spellbinder was the followup game to Hyperball. (The game was sure to be a smashing success, so another game in format had to be ready to go.) The photo here is of an unpopulated playfield for that game. Rumor has it that only one Spellbinder was ever made, and that it was probably scrapped.

Note the locations of the holes in the playfield. Viewers familiar with Hyperball will note that they correspond to the Hyperball locations, so that the Hyperball parts could be used with Spellbinder.
Here's a photo of the backglass. I've seen a couple of these around, but rumor has it that most the of the glasses were destroyed.
This is a picture I scanned from the August 6, 1999, issue of the Chicago Tribune. The article was about casual attire in the workplace, and the photo shows the lounge at Zefer Corp. (I cropped the picture to about 1/3 its original size.) The interesting thing about the photo is the Cirqus Voltaire pinball machine in the background. I don't know what Zefer Corp does, but it looks like a fun place to work.
This is an interesting photo sent to me by Mike Wiley. This is a Baby PacMan in an experiemental cabinet. I asked Jim Patla about the origin of this and he said that a wannabe industrial designer put this together as a concept piece.
Here's another interesting photo from Mike Wiley. Unfortunately, he cut a bit of the signature off from the picture. This is the bottom of the cabinet of Mike's Twilight Zone pinball. I showed this photo to Pat Lawlor, and he verifies that he signed the first production game off the assembly line. Sure looks like Pat's handwriting to me.
This photo comes from David Gersic. At the 1998 Pinball Expo in Chicago, the folks at the Williams Electronics Games booth were giving away red, clear, plastic disks. These were samples of those eventually used in the Tales of the Arabian Nights pinball game. When David brought home one of the disks, his wife and daughter asked if he could get any more and he contacted me. I asked how many and the reply was "As many as possible."

Shown here is the locomotive from a train made from the plastic disks that I was able to get for the Gersics. (David sent a whole series of photos showing numerous train cars.) The train ended up as decoration for a children's party, I believe.
The US debut of Pinball 2000 occured at the March 1999 Amusement Showcase International. As part of the kickoff, two Revenge From Mars games were unveiled in the arcade at the New York New York Hotel and Casino. A couple of costumed characters showed up to help with the kickoff.
Here's a photo of an early version of the backglass artwork for the Defender pinball.
Here's the production Defender glass, for reference.
Here's a photo of a backglass for the game that eventually became Cosmic Gunfight. It was originally called Dragonfly.
The original backglass art for Grand Lizard was painted by Paul Faris. This artwork was considered "too dark", and a new glass was painted by Python Anghelo for production.
Here's the production Grand Lizard glass, for reference.
When Truck Stop was in development at Bally, before the arcade division was purchased by Williams, the game was called Ramp Warrior. Here is a photo of the backglass art for Ramp Warrior. Note the whimsical "Billy" logo stuck in the upper left corner - it is taped over the traditional "Bally" logo.
Thunderball was the first game designed by Mark Ritchie. Only nine prototype games were made. The game was designed during the slump of mid-'80s, and it was very expensive, so it's not surprising that Thunderball didn't make it too production. (Among the items adding to the games expense were an extensive under-playfield trough system, two 5-bank drop targets with individual reset coils, an area of the playfield that was cutout and bent upward, and speech.)

This is a photo of the backglass. I have a photo of the playfield around somewhere; I'll have to dig it out.
A few years back, Rick Schieve sent out this Christmas greeting. Four Banzai Run games in a row is a sight to see. I'm not sure which, but one of those games is now in my collection.
I'm not sure what to make of this. Greg Freres (former head of Williams Pinball art department) gave these photos to me when he was cleaning out his desk. It looks like someone sent him shots of some pinball art he/she had created.

Additional pieces: Pinball Art 2, Pinball Art 3, Pinball Art 4.
Here's a photo of an early version of the backglass artwork for the Scorpion pinball. I've been told that this artwork actually predates the game.
Here's the production Scorpion glass, for reference.
Some early Jungle Lord games were shipped with this four-color process backglass. The original artwork appears to be magic marker.
Later games were shipped with this line art version of the backglass.
Here's an early version of the Hyperball backglass. It is basically just the logo.
Here's another early Hyperball backglass.