I was writing custom forms that needed a validate handler and a submit handler. So, I followed the standard approach of

function my_module_menu(){
$items = array();
$items['my/module/custom-form'] = array(
'title' => 'I am a doofus',
'page callback' => 'drupal_get_form',
'page arguments' => array('my_module_custom_form'),
'access callback' => TRUE,
'type' => MENU_CALLBACK,
);
return $items;
}

Note: My access callback is just to simplify this example.

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