I was unaware of the "Baby Geniuses" movie franchise until this morning.
Includes "Baby Geniuses and the Mystery of the Crown Jewels".
Related, a good wikipedia article listing the films generally accepted to be the worst of all time.
includes one called The Conqueror that was filmed near a nuclear test site and a large proportion of the cast and crew died of cancer. Reading the article reminded me that it was on in the hospital when I sprained my ankle and was waiting for an x-ray.