A good steak needs none...
I know what ketchup is (I certainly don't put it on my steak, though), however the others confuse me.
There's a great steakhouse over here - Squire's Loft (
http://www.squiresloft.com.au/) and they have a beautiful gorgonzola sauce. Otherwise, well, I like pepper sauce although I'll usually go for some garlic butter melted over the top.
EDIT: Also went to Maze a few weeks back (Gordon Ramsay's restaurant) and that was pretty spectacular! (
http://www.gordonramsay.com/mazegrillmelbourne/)