Bill Belichick is the great unifier.

For the first time in ESPN.com's individual Power Rankings series, the eight panelists reached unanimity. Each of us voted Belichick the NFL's best head coach, and there's little room for argument.

As someone who has scrolled through their comments for the past three years, I can hear the Spygate whiners already.

But Belichick hasn't won anything since the New England Patriots were caught videotaping defensive hand signals ...

That's true, I suppose, if you don't consider 51 victories, a .797 win percentage, three division titles and a trip to the Super Bowl not winning anything. I'm pretty sure fans of any team other than the Green Bay Packers, New Orleans Saints, Pittsburgh Steelers and New York Giants gladly would trade their past four years for the Patriots' so-called embarrassments.

And I'm guessing fans would find ways to justify those three Lombardi Trophies if their teams were in the Patriots' situation.

Belichick wasn't the only coach voted on with conviction. Head coaches are the fifth installment of our Power Rankings series, and the 13 combined nominees from our ballots were the lowest number of nominees so far. Our panel nominated 17 tight ends, 17 pass-rushers, 16 wide receivers and 15 running backs.

Pittsburgh Steelers coach Mike Tomlin was second in the Power Rankings, and the lowest he rated was sixth on NFC West blogger Mike Sando's ballot. The minus-4 differential from Sando -- not a substantial disparity at all -- was the largest negative margin relative to final placement in the entire process.

Sando explained his deviance from the pack.

"I favored coaches that walked into tough situations, won relatively quickly and then sustained the improvement over more than one season," Sando said in a statement issued through an NFC West blog spokesman. "Tomlin took over a healthy operation and kept it going. He deserves credit for that -- I ranked him sixth -- but not as much credit as if he had produced similar results after taking over a struggling franchise.

"We should view the success Bill Cowher enjoyed in a similar context. Both worked for an outstanding organization."

To be honest, I actually considered putting Cowher on my ballot just for the heck of it. But I opted against getting cute.

Let's take a closer look at how we voted:

We ranked Philadelphia Eagles coach Andy Reid third, and he was listed no lower than fifth -- on AFC West blogger Bill Williamson's and mine -- on anyone's ballot.

Tomlin led the way with four second-place votes. Reid received three. Green Bay coach Mike McCarthy got the other one and came in No. 4.

To further illustrate how closely the voting breakdown turned out, four coaches received third-place votes, four received fourth-place votes and four received fifth-place votes.

Our top seven head coaches were listed on every ballot.

The highest-rated coach not to be universally nominated was Chicago Bears boss Lovie Smith at No. 8. He didn't make AFC North blogger James Walker, AFC South blogger Paul Kuharsky and Williamson's ballots.

"Consistency is very important for head coaches, and Smith has more non-playoff seasons than playoff seasons," Walker said. "Smith seems to be on the hot seat every other year in Chicago, and he missed the playoffs three consecutive times from 2007 through '09. Despite a good run last year, Smith is a pedestrian 34-30 since '07."

Atlanta Falcons coach Mike Smith came in ninth. He didn't appear on NFC North blogger Kevin Seifert's ballot because Smith hasn't won a playoff game yet. Seifert swore it had little to do with that Falcons school bus commercial that gets played incessantly on NFL Network. Three other panelists omitted Smith, too.

Baltimore Ravens coach John Harbaugh and Washington Redskins coach Mike Shanahan tied for 10th.

What helped narrow the field is the constant turnover the NFL coaching profession experiences annually.

Eight teams have new coaches for 2011, ostensibly reducing the number of Power Rankings candidates to 24 from the jump. Nine more coaches have been with their current teams for two seasons or shorter.

A two-year stint didn't prevent the panel from voting for Shanahan, whose body of work includes a pair of Super Bowl titles with the Denver Broncos, or Rex Ryan, who has guided the New York Jets to the AFC Championship Game in each of his two campaigns.

Williamson and Walker had Shanahan rated seventh, his highest placement. Shanahan was absent on four other submissions, mine included.

"Shanahan may not have looked like a brilliant coach in his first year in Washington, but he deserves to be on this list," Williamson said. "He is not some old retread. With so much turnover in the coaching ranks, he is truly one of the last remaining of the old guard 'Super Coaches.' The guy has two rings and a lot of playoff appearances. I don't think he's a top-five guy at this particular time, but he belongs in the top 10."

Williamson and I each thought Ryan deserved to be rated fourth, although none of our comrades had Ryan higher than seventh.

My reasoning is that Ryan, despite not winning the Super Bowl, has a tractor-beam pull on his players -- and even other teams' players -- unlike any other coach in the league. Ryan carries serious clout with the people who matter most of all, the ones on his roster. That's powerful, and these are Power Rankings.

Another to receive votes despite two years at the helm was Indianapolis Colts coach Jim Caldwell. He came in 13th overall, eighth on Kuharsky's ballot and 10th on Walker's.

"I do not think he's a particularly good game-day coach," Kuharsky said of Caldwell. "The rationale he had for the late timeouts that helped the Colts lose at Jacksonville and to the Jets in the playoffs was flawed.

"But in terms of delivering a consistent message, setting expectations and holding a team together through an injury-riddled season, he did excellent work. And those are very important elements to the job."

The floor is yours. Let us know if you agree or disagree.