Fuck it, thought I'd join in with this one:
5,149,690 - 4 (Boss) - Yusuke
Reached stage 5 but with a lower score. Is there a hidden 1-up on one of the trains in Stage 4? I think I managed to trigger it but no idea how I managed it.
EDIT: Just got 6,025,700 - 5 - Yusuke