The iMac G4 was the catalyst that moved me to the Mac. I had an opportunity to use one during an REU in 2003. That fall I purchased my first Mac, the 12" PowerBook G4. OS X blew my mind, in addition to relative ease to learn some programming skills bolstered by the fact that Xcode was free, a big plus for a student at the time. Additionally, the design language and attention to detail from Apple sent me all-in. I was mesmerized by the 'heartbeat' sleep indicator light, led 'feel gauge' on my PowerBook battery, the magnetic induced latch, ease of adding the Airport card, etc.
I still love my Macs, but none have spoke to me in the same way as the G4 series. I would love to have a machine like the OP's, but I don't have a G4 iMac laying around and would not be able to bring myself to demolish a current generation product to make it happen.
Regardless, excellent work!