If he wins he'll get into the Australian Open Semi against Nadal or Ferrer (Ferrer one of those top ten players who's very consistent and good on clay, but you've never heard of him). Well never count your chickens but it'll probs be ol' Rafa. Nadal took out Cilic in the fourth round.
Cilic is the tall Croat who beat Murray in the US Open, and has a nice face shape. Cilic played some good points but couldn't string it together against Nadal (who can?) and made too many unforced errors. But at times it was a close match, and Cilic was 4-0 up in the second set, had he managed to hold on to it and win that set it could have been an interesting time for Rafa fans.
On the other side of the draw Federer beat fellow Swiss Wawrinka (pronounce the w as v btw), fairly easily. Wawrinka who's on the way back to the top ten beat Monfils and Roddick playing rather superbly couldn't stand an on fire Federer. And Federer (defending champ remember) is in the Semis against Novak Djokovic.
Novak also won fairly comfortably against Berdych, he play great in the first and third sets winning them both 6-1, the second set was much tighter however, with Novak struggling with contact lens problems and being a bit whiney about it really. Berdych took a break, but lost it and Djoko won it on a tie break.
On the women's side Chinese Li Na won her match against Petrovic (who has the much famed Petro dance when she wins), coming from a break down in the first set. This sets up a semi final with world number one Wozniaki, who beat prize fighter Schiavone. Schiavone had a mammoth match against Kuznetsova (lasted 4 and a half hours, longest in grand slam history, and 16-14 in the third set), but still battled hard through three sets against The Woz.
On the other side of the draw it's still in the quarter final stage with Clijsters against Radwanska, and Zvonerava against Kivitova. All going to plan it should be Clijsters against Zvonerava in the semi, but it's always silly to speculate on women's grand slam results.