It is always fun to show students product failures. Especially like those shown here. I think intuition alone would tell most of us that these were not such good ideas. But it is good for students to see that even big companies, with lots of money and smart people, can make mistakes.
You might want to add a few of these images to your coverage of product (Chapter 8) or new product development (Chapter 9). Colgate Lasagna (really?) could be used with the growth opportunity matrix in Chapter 2 as an example of why diversification is so risky. Or the Bic Her (pens designed for women) might be an example of segmentation and targeting gone too far.