England's 68-14 rout of Wales probably eclipsed France's demolition of Italy a few weeks ago as it was more unexpected.
England had been relatively poor throughout the Six Nations, with two lucky wins over France and Scotland.
But everyone showed up today in what was an incredibly complete performance.
However, in the Virgin studios Rob Kearney had his reservations.
The former Ireland fullback said: "It's hard to know because they won two games they shouldn't have won.
"They were blessed that France turned up and decided they didn't want to catch the ball that day and then blessed against Scotland that Finn Russell, who is normally the best of goal kickers, missed some really important kicks.
"Today was by a considerable distance their best performance of the Championship..... I loved the power, the physicality, the quality of the running lines, the speed of the ruck, and didn't they kick the ball away aimlessly..... it was a very complete performance.
"But only a few weeks ago they were very poor, it's as if they don't have a real consistency just yet.
"If they can follow up that performance and do that for a sustained amount of time over the summer tour and next year, then yes they're definitely a team to be reckoned with."