Blocks in Objective-C are also buggy. If you chain 3+ in a row, the compiler craps out

  //Ex:
  [UIView animateWithDuration:1 animations:^{...} completion:^{
    [UIView animateWithDuration:1 animations:^{...} completion:^{
      [UIView animateWithDuration:1 animations:^{...} completion:^{
        //Compiler error here
      }]
    }]
  }];