It happens at least twice a year and presents the ultimate challenge for any "mixed" marriage - when one spouse is a Green Bay Packers fan, the other a Minnesota Vikings fan. It gets more complicated if kids are involved who split allegiances. Sunday's rematch in Lambeau Field has the added wrinkle of Brett Favre making his first appearance as an opposing quarterback. So who do you root for, Packers, Vikings or Favre? If you have a "blended family" experience, the Tribune would like to hear from you. Call Editor Chris Hardie at (608) 791-8223 or e-mail chardie@lacrossetribune.com.