It seems like packaging design should be fairly simple, but there seem to be quite a few people in the business who don't seem to get the basics. This list of packaging and labeling fails illustrates the importance of the phrase “measure twice, cut once.
You Dont Say, AHAHAHAHAHAHHAAH! I'm not a fan of this kind of humor (it think it gets annoying in real life unless everyone's in the mood), but the "You don't say" Nick Cage meme has got to be the funniest meme ever. I couldn't stop laughing.