Okay, so I have your attention. :-)
Here are two things you don’t want to see – especially when you are on a photo workshop or vacation.
The first image shows a cracked laptop screen (mine). My screen got cracked when someone rested their elbow on my computer in the lobby of a hotel. You can avoid this mishap by being very, very careful with your laptop when you travel. If your screen cracks, you might as well get a new computer.
Here is a screen shot that shows what I thought was a corrupted file: one of my pictures from a 2004 African safari. Actually, the card reader crapped out (which is quite unusual). Switching the card reader and the cable, I found that the card and file were fine. My point: always travel with back up EVERYTHING when your pictures are very, very important.
If your card does corrupted, don’t panic! Rescue software is available from most card manufactures. You can also find rescue software on the Web.