Team of the Week: Shamrock v Rose
And they are warming up for the big game by going head-to-head in rugby365's famous team of the week.
Ireland, who beat France at the weekend, and England, who overcame Italy, are the only unbeaten teams remaining in the Championship.
And their good form is reflected in our selection - four from Ireland and four English players in our starting XV.
Scotland also impressed, despite their loss to Wales, and have three players starting for us. Wales (two), France and Italy (one each) make up the numbers.
There's further reward for England and Ireland in our back-up squad - a selection which Wales dominate.
Six Welshmen are bubbling under, followed by Ireland (five), England (three) and Italy (one).
Five players return from last week - fullback Stuart Hogg (Scotland), centre Jonathan Joseph (England), scrumhalf Conor Murray (Ireland), as well as props Dan Cole (England) and Joe Marler (England).
Team of the Week: Six Nations, Round Two:
His value to Scotland can be measure in far more than just attacking metres and tackles made.
Bubbling under: Leigh Halfpenny (Wales)
Like most French players consistency is no his best attribute - when he is good he is awesome, when he is bad he is horrible.
Bubbling under: Anthony Watson (England)
Stuart Lancaster may have unearthed a real gem here!
Bubbling under: Jared Payne (Ireland)
In a head-to-head shootout, Dunbar just edged his Welsh rival, Jamie Roberts.
Bubbling under: Jamie Roberts (Wales)
Maybe defence is not his best trait, but on attack he is a constant threat.
Bubbling under: Simon Zebo (Ireland)
Arguably the world's premier flyhalf at the moment - at least the most in-form.
Bubbling under: Dan Biggar (Wales)
He is central to his team's cause and his form is improving with every match.
Bubbling under: Ben Youngs (England)
Another tight contest, barely separable.
Bubbling under: Sergio Parisse (Italy)
It may well be a selection that will raise some debate.
Bubbling under: Chris Robshaw (England)
In true Irish fashion he is a combative loose forward.
Bubbling under: DanDan Lydiate (Wales)
The veteran again showed he is still up there with the best.
Bubbling under: Alun Wyn Jones (Wales)
Nothing gray about his game, just pure gold!
Bubbling under: Devon Toner (Ireland)
Beginning to make a big statement with some consistent performances.
Bubbling under: Mike Ross (Ireland)
Another inspired performance by the veteran.
Bubbling under: Richard Hibbard (Wales)
Solid scrumming, a monster on defence and doing all the basics well.
Bubbling under: Jack McGrath.
Our individual selections:
Darryn Pollock XV: 15 Stuart Hogg, 14 Tommy Bowe, 13 Jonathan Joseph, 12 Luca Morisi, 11 Liam Williams, 10 Jonathan Sexton, 9 Ben Youngs, 8 Sergio Parisse, 7 Chris Robshaw, 6 Peter O'Mahony, 5 Alun Wyn Jones, 4 Devin Toner, 3 Uini Atonio, 2 Ross Ford, 1 Jack McGrath.
Warren Fortune XV: 15 Stuart Hogg, 14 Anthony Watson, 13 Jonathan Joseph, 12 Jamie Roberts, 11 Simon Zebo, 10 Jonathan Sexton, 9 Ben Youngs, 8 Billy Vunipola, 7 Sam Warburton, 6 Dan Lydiate, 5 Paul O'Connell, 4 Dave Attwood, 3 Vincent Debaty, 2 Dylan Hartley, 1 Joe Marler.
Michael de Vries XV: 15 Stuart Hogg, 14 Yoann Huget, 13 Jonathan Joseph, 12 Wesley Fofana, 11 Liam Williams, 10 Jonathan Sexton, 9 Greig Laidlaw, 8 Taulupe Faletau, 7 Sam Warburton, 6 Peter O'Mahony, 5 Paul O'Connell, 4 Richie Gray, 3 Dan Cole, 2 Richard Hibbard, 1 Joe Marler.
Tauriq Ebrahim XV: 15 Leigh Halfpenny, 14 Alex Cuthbert, 13 Jonathan Joseph, 12 Jamie Roberts, 11 Teddy Thomas, 10 Jonathan Sexton, 9 Conor Murray, 8 Billy Vunipola, 7 Sam Warburton, 6 James Haskell, 5 Paul O'Connell, 4 Richie Gray, 3 Mike Ross, 2 Richard Hibbard, 1 Joe Marler.
Paul Dobson XV: 15 Leigh Halfpenny, 14 Anthony Watson, 13 Jonathan Joseph, 12 Alex Dunbar, 11 Liam Williams, 10 Jonathan Sexton, 9 Conor Murray, 8 Sergio Parisse, 7 Sam Warburton, 6 Peter O'Mahony, 5 Alun Wyn Jones, 4 Richie Gray, 3 Dan Cole, 2 Leonardo Ghiraldini, 1 Joe Marler.
Jan de Koning XV: 15 Stuart Hogg, 14 Yoann Huget, 13 Jonathan Joseph, 12 Alex Dunbar, 11 Simon Zebo, 10 Jonathan Sexton, 9 Conor Murray, 8 Billy Vunipola, 7 Chris Robshaw, 6 Peter O'Mahony, 5 Paul O'Connell, 4 Richie Gray, 3 Dan Cole, 2 Leonardo Ghiraldini, 1 Joe Marler.
Previous selections:
Team of the Week: Six Nations, Round One: 15 Stuart Hogg (Scotland), 14 Anthony Watson (England), 13 Jonathan Joseph (England), 12 Jamie Roberts (Wales), 11 Teddy Thomas (France), 10 Ian Keatley (Ireland), 9 Conor Murray (Ireland), 8 Taulupe Faletau (Wales), 7 Chris Robshaw (England), 6 James Haskell (England), 5 Jonny Gray (Scotland), 4 David Atwood (England), 3 Dan Cole (England), 2 Rory Best (Ireland), 1 Joe Marler (England).
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Play of the Week - Round Two