He helped Kevin Harvick win the 2007 Daytona 500. In turn, Harvick helped him win "The Great American Race" two years later.
But before Matt "The Brat" Kenseth and "Happy" Harvick were chums congratulating each other on victories, they were bitter enemies on the track.
So heck, since Kenseth is suck a big story lately...it's the return of "The Many Feuds of Happy Harvick."
It was Pocono, The Pennsylvania 500. The Tricky Triangle. In 2004, it was the sight of trouble brewing under caution.
On lap 196, caution was out after both Dale Jarrett and Jeff Burton lost engines, spilling oil onto the track.
Kenseth and Harvick were running, under the yellow flag mind you, in 11th and 12th place.
Coming out of Turn Three, a very unhappy Harvick spun the No. 17 DeWalt Ford, sending him into the infield, grass flying. It wouldn't be the last thing to fly.
Harvick insisted the defending Cup champion brake-checked him.
Furiously driving back on track, Kenseth got his sweet revenge by ramming his car into the No. 29 Goodwrench Chevrolet, in turn sending Harvick into the grass.
NASCAR wasn't about to let them off the hook.
After the race, officials called both drivers to the infamous NASCAR Hauler for a chat-- and to dock them from a 10th (Kenseth) and 11th (Harvick) place finish to a 20th and 21st place.
It wasn't over there, though. The two were penalized again by the sanctioning body that Wednesday.
The price? A fine of $25,000 and a stint or, for Harvick, a second of probation to end Aug. 11.
Happy wasn't pleased with the penalty.
"It's their world, and they're showing everybody they can dictate it and screw it up however they want," Harvick said.
Roush Racing President Geoff Smith wasn't buying it.
"It's the classic, 'I was minding my own business when the guy snuck up on me and sucker-punched me.' That's the Jimmy Spencer kind of defense," he countered.
NASCAR spokesman Jim Hunter agreed, saying Harvick was "dealing with his own set of facts."
A normal feud would've ended there. The two would call each other during the week, settle everything, and it would all go away.
Come on people, this thing hasn't been gone that long. Is anything about a Harvick feud "normal"?
The following week in Michigan, Harvick was shown during qualifying wearing... well, of course, a Matt Kenseth 2003 Championship shirt.
A good sport, Harvick auctioned off the shirt, racing over $3,000 for the Victory Junction Gang Camp.
So folks, I hope you enjoyed the return edition of "The Many Feuds of Happy Harvick". Tune in next week when Harvick talks trash with one of the Busch brothers.
Thanks to FOX, USA Today, The Charlotte Observer, NASCAR.com, and the Rome-News Tribune for the quotes and information used in this piece.