This game does look awesome, but I think I am going to have to rent it, my list is way way too long right now.
Actually, I know someone who I can probably convince to get this, since it's great game for a parent with a Wii.
PS - Metroid Prime 1 = 15 Bosses/Minibosses and Metroid Prime 2 = 15 (18 if you count each of the Dark Samus fights)