Kris Lindahl is regarded in Minnesota about the same as a cryptid. Nobody quite knows where he came from or who he even is but his face is EVERYWHERE. He owns 600+ billboards throughout Minnesota and supposedly has started putting them up in other states as well.
Some examples of Kris Lindahl sightings:
This picture was taken TODAY! ^^
He doesn't just limit to only putting up billboards either...
At one point, another realtor put up a similar ad in a completely different place:
And Kris Lindahl SUED THE GUY FOR TRADEMARK INFRINGEMENT!! (It was thrown out by a judge)
He's so prolific in Minnesota that there are actual news articles written about him from our local stations and newspapers:
It even made the news when his billboards left the city with the article Kris Lindahl’s Billboards Spotted In Colorado
Parody billboards have even started to go up to make fun of this man. Most notably:
At one point a suburban teen invited him to his graduation party and as a response Kris Lindahl put up a billboard to congratulate the teen: 
Now... All of this is funny on its face but I'd like to end this by introducing everyone to the best example of this entire phenomenon... Long Lindahl
I've worked at an advertising company that worked exclusively with real estate agents and I can tell you beyond a shadow of a doubt, it's real estate agents. Biased or not.
Weirdest tagline/slogan you ever heard. Go.