Even though it's a well known fact that WEP is broken beyond repair, most people still use it. Home users especially feel secure that no one would be spying on them.
In this video, a media correspondent is accompanies by a group of wireless security experts who demonstrate how a WEP encrypted network can be broken.
The security experts park a van outside a home running a WEP AP and break into it. Then they watch the home owner typing and booking his tickets online in real time. The funny part is when they print out his tickets and knock at his door! :D
This video emphasizes the need for migration from WEP to WPA even for home users. Also contrary to popular belief it is very easy to set up a home environment which works with WPA-PSK.