Cool objective-c code spy

AppDelegate.m

// Override this method in any class to get a pretty list of 
// all methods that are being called - very useful.
// Try it on the AppDelegate for example

-(BOOL)respondsToSelector:(SEL)aSelector {
    printf("The spy says: %s\n", [NSStringFromSelector(aSelector) UTF8String]);
    return [super respondsToSelector:(aSelector)];
}