Is it Christmas overkill or an ultra-cool holiday display?

Anyone who drives past the Williams house on Winding Creek Court will have an opinion.

Carson Williams' two-story home is decorated top to bottom with 25,000 Christmas lights - but that's just the beginning.

He used software to program them to 12 minutes of Christmas music.

The result is a dancing display of synchronized lights that he says you have to see to believe.

"We had about 300 cars on Friday," said Carson, 40.

"The farthest we've had was Michigan. They knew someone in Loveland and they were coming through and stopped to see it."

According to PlanetChristmas.com and other Web sites, light-show technology is becoming more popular. There are even instructions on how to set up a display with Light-O-Rama software.

But a show of this magnitude is still rare enough that Williams has received calls from across the country, including the "Today" show, which is interviewing the family live this morning.

"We just can't stop smiling," said his wife, Sherry, 39.

This is the third year for the show, which gets bigger every season. It took Williams about three hours to program each minute of music.

Williams broadcasts the music from a low-power transmitter in his computer to an FM radio station. A sign tells passers-by to tune in.

An electrical engineer for Cincinnati Bell Technology Solutions, Williams said it was time consuming, but worth it.

The Internet rocketed the two-story house to instant cyberfame after Williams posted the 2004 light show in February.

It's been a wild ride for the couple and their two children, Amanda, 10, and Brittney, 11.

"Inside Edition" is scheduled to film a segment this afternoon.

Miller Brewing Company spent about seven hours Thursday filming footage for an upcoming commercial.

"They put fake snow in the yard," Sherry Williams said.

The Trans-Siberian Orchestra - whose music is featured in the light show - invited the family to attend its Cleveland performance Saturday where they received VIP treatment.

"I'm overwhelmed. I am just beside myself," Sherry Williams said. As of Sunday morning Williams' original Web site had gotten 848,000 hits and had been picked up by a host of others.

People are pouring into his neighborhood to check it out.

By 5 p.m. Sunday - an hour before showtime - cars were already starting to line the street. By 6 p.m., traffic was bumper to bumper.

"What time is the light show?" called out two Indianapolis residents on their way to a party in Cincinnati.

The Hughes family made a trip from Miamisburg.

"The amazing thing that blows you away is that this is his hobby," said Brian Hughes, who brought his wife, two young children, brother and mother-in-law. They brought snacks and sat on the neighbor's lawn wrapped in blankets.

"For me, it's not too much," said Williams of the tourist attraction his house has become. "I'm just worried about the neighbors. I tell people, as soon as I get a complaint, I'll shut it down. I told that to the sheriff's office, too."

He stays outside for hours at a time chatting with passers-by and directing traffic.

The Hare family, across the street, can see from their bedroom window.

"We've had no problems," said Dave Hare, 41. He and his wife, Michelle, 44, and their three children, ages 10, 13 and 15, remember the first year the lights went up.

"We called it the psycho house," Michelle said, laughing. "It was just weird random flashes. Then, he told us about the radio station and it was great."

They said they hope he'll keep the show going next year.

"We love Christmas lights and that's what people do, families drive around to look at light displays."

The show ends Jan. 1.