This fragment of code do the trick:
[UIView beginAnimations:@"Flip" context:nil];
[UIView setAnimationDuration:1.0];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.base.view cache:YES];
[user.view removeFromSuperview];
[base.view addSubview:home.view];
[UIView commitAnimations];
In this example the "user" viewcontroller is removed, and the "home" viewcontroller is added, with a pageflip like transition
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