Perfect day for Australia. Top and middle order both contributed well, the most important batsman in the side is in devastating touch and England's bowlers look flat and unthreatening.
The pitch is a very good one for batting and it was a crucial toss, but it's not a road and shouldn't be that tough to take wickets on later in the test. There's plenty of pace and bounce and heaps of turn for day 1, and England will have to bat really well to get anything out of the test from here. First hour tomorrow is crucial, and England really need a couple of early wickets and to hopefully have the innings close to wrapped up by lunch. Anything under 500 isn't a disaster, as it's definitely a 350-400 pitch, but if Australia bat until tea it's over.
Flintoff carried the whole team, though Giles was pretty good too and will be crucial if England do get to bowl at Australia again in the third innings. I really can't see him running through a side though, and it's hard to see England taking 20 wickets with the way things stand at the moment, especially considering that Adelaide and Perth are likely to be very flat decks. Harmison was hopeless and aside from the occasional good delivery Hoggard and Anderson were average too, with Anderson in particular releasing the pressure with a four ball way too often. The fact that Pietersen looked more likely to take a wicket than most of the front-liners says plenty.