Ill-advised movie sequelsOCT 01 2008

Some of these don't seem like such a good idea. (These are actual sequels being written/produced/considered/etc.)

Blade Runner 2
Pirates of the Caribbean 4
Beverly Hills Chihuahua
Cars 2
Toy Story 3
Ghostbusters 3
I Am Legend 2
Donnie Darko 2

Ok, Beverly Hills Chihuahua isn't a sequel but rivals Blade Runner 2 for the worst idea on the list.