First 8-bit computer for me was the MSX which I believe was never popular in North America. It was revolutionary and had crazy games and educational software. Was popular in Europe and Asia and it had some really creative games like Kings Valley 2 and The Castle.
The Atari 2600 was the first home console, but I didn't like it. The 16-bit era was the first huge jump in gaming when it comes to home consoles, IMO.