All the PS2 menu sounds and design where so futuristic and 'far out' that it's still bonkers today. I hate the way the interfaces on consoles have become so damn generic and boring. The PS4 one looks like a shopping website!
The Japanese PS2 had a slightly different boot, it's didn't descend on rectangular columns, just one floating square with 4 coloured lights (red, green, pink, blue) hovering around it.
The original PS3 startup score and game boot was pretty good but then they changed it.