Each major tournament sees the introduction of a new ball. For Euro 2008, that's the handsomely designed Europass. With each new ball comes a parade of bitching and moaning from the goalies. Having never played goalie at the international level, I can't tell you if there's much of a difference trying to save one ball versus another, but these guys sure do have their excuses ready.
While we're on the subject of official soccer balls, this is one of the greatest collector items I've ever bought. To borrow a line from Ferris Bueller, if you have the means to acquire one, I highly recommend it.