But will 'Big Phil' win with Chelsea?
He won the World Cup with Brazil in 2002. Okay, it's Brazil - if it was Samoa, I'd be really impressed.
He took Portugal to Euro 2004 final - in PORTUGAL, but they lost to mighty Greece. Was that a great achievement?
He has no European club experience but has won at club level in South America.
He won the Copa Libertadores - South America's equivalent of the Champions League - with Brazilian clubs Gremio and Palmeiras.
He has also won a Brazilian championship with Gremio in 1996, three Brazilian cups and three South Rio Grande championships.
All very impressive, but all a long time ago and very, very far away.
His English is not great, so what language will be first choice in the multi-lingual Chelsea dressing room?
Can you see John Terry learning Portuguese? Hmmm, me neither.
Chelsea will have to employ a top-class language tutor, perhaps the same company that has done wonders with Fabio Capello. I hope so.
It's a tough schedule for a man who will be 60 in November.
Chelsea's bosses will be expecting the team to be at least six points clear at the top of the table by Christmas.
That will give them the platform to preare for what they hope will be a Champions League/Premier League double.
Anywhere short of that lead will add immense pressure on Scolari.
I hope the club will provide him with all the tools necessary to be successful.
If not, then Scolari, who was deemed not to be first choice by Roman Abramovich might find his tenue at SW6 will last just a few months longer than Mr Avram Grant.
What do you think of Luis's appointment?
Have your say on the messageboard now.