1. Rocky Mountain Fusion. That's a '92 Fusion I bought for next to nothing that seemingly had never been used. It was incredibly clean. I put a new Shimano CUES drivetrain on it, and actually sold it for a small profit.
2. Kona Kilauea. I think this was a '93 or '94 that I got as a singlespeed. I redid it with as much of the black Shimano LX group as I could, and put some Marzocchi XC500 lowers on the XC51 fork it had. I did eventually sell it, but it was way harder to sell than I ever thought it would be.
3. Cannondale M200SE. The Moose. I thought the Viper red Cannondale was an iconic bike that would be a cool project, and I turned it from a commuter into a period-correct 'roll around' bike with Shimano LX cantis, Ritchey Logic cranks, and ethereal Innova tires. However, other things came along, and I ended up returning it to its commuter roots and selling it.