Soul Calibur is Tekken with swords pretty much.The series is made by the same developers as the Tekken series.I have this on order as I love Soul Calibur games.They are very easy to get into.You can practice for hours learning killer moves and combo's only to play your kids who mindlessly bash all the buttons and kick your butt !.Seriously get a game between 2 players of a similar level and this series is one of my favourite beat em ups.The controls are very similar to the Tekken series so you will feel right at home with it if you have played those games before.Yoda is exclusive to the 360,Vader to the PS3.Lots of rumours saying Vader will available to buy from Xbox marketplace after a couple of months (if thats true then Yoda will obviously be available via PSN).I'm not really bothered to be honest as I reckon they have only been included as a sales gimmick and will probably not be as good as Soul Calibur's own characters anyway.
Here is clip of the game in action for anyone who hasn't seen it running :
Soul Calibur IV Gameplay