Football managers; we all love em, right? Especially on consoles! We've all played Premier Manager, LMA Manager, Player Manager and so on. Hell, I just bought Football Manager Handheld on PSP, because it's the ideal way to play!
Anyway, GK - Giant Killers on Sega Dreamcast is just that. Surprising no one, the sim was released only in Europe. It even holds the title of being the only football manager in the entire Dreamcast library. Therefore, it is the best one!