http://tvtropes.org/pmwiki/pmwiki.php/Main/DeusixMachina after browsing through articles about villains, the "dog kicker" villain type, villain BSOD, and other concepts behind "The Villain."

Are there any movies, shows (anime/non-anime), or fictional stories that you like and hate with this concept? Also, is it ever acceptable in said medium to have these Deus ex Machina Moments, or is it a horrible, cliche format that should die?