It's no coincidence that so many of the best good bad movies are sequels. By their nature most sequels are derivative cash-grabs required to up to the ante on their predecessor, which is almost a recipe for so bad it's good fun.
Crocodile 2: Death Swamp (2002)
A commercial airliner crash lands in the Floridian swamps leaving assorted cabin crew, passengers and heavily armed bank robbers to face off against a huge, angry crocodile.
Hot Potato (1976)
This sequel to Black Belt Jones (not to be confused with Black Belt Jones 2 which, confusingly, isn't a sequel to Black Belt Jones) sees Jim Kelly kicking ass in Thailand as a special agent tasked with rescuing a senator's daughter. Or an ambassador's daughter. It depends which bit of the movie you listen to.
The Return of the Bionic Boy (1979)
Technically this is also a sequel to Cleopatra Wong because Marrie Lee's signature character is drafted in as godmother to young Johnson Yap, the cy-boy star of the first movie. The climax with the fire-breathing metal dragon tank is unmissable.
Howling II: Your Sister is a Werewolf (1985)
An arthouse horror movie gone wrong that features the divergent charms of Christopher Lee (taking a payday), Sybil Danning (taking it seriously) and Reb Brown (taking the piss).
Troll 2 (1990)
Perhaps the most infamously awful part 2 in moviedom, if you don't count Attack of the Clones. The stories are legendary: nobody spoke English, there aren't any trolls, the cast featured local mental patients, etc. Somehow it's all true.
Silent Night, Deadly Night 2 (1987)
If you've only seen the ubiquitous meme in which an enraged killer jeers, 'garbage day!' before shooting a stranger in the bins, do yourself a favour and check out the whole movie.
The Impossible Kid of Kung Fu (1982)
The followup to For Y'ur Height Only sadly doesn't feature a dub by Dick Randall, the producer who spearheaded the trend for giving Asian actors stupid voices in American releases. But it does feature a primordial dwarf jumping a ravine on a miniature motorcycle.
Delta Force 2: The Colombian Connection (1990)
Chuck Norris takes on drugs, evil and non-Americans in his most outlandish and over the top movie. And Billy Drago delivers one of the best hammy bad guy performances of the 80s. On a technical level it's like a proper movie, but it's so dumb it has to be considered good bad.
Deathstalker II (1987)
John Terlesky is criminally overlooked as a comedic leading man. In Jim Wynorski's absurd sequel he's perfect as the overly confident, narcissistic hero, and there's great support from the similarly underrated Monique Gabrielle.
Psycho Cop Returns (1993)
The sequel to 1989's Psycho Cop ditches that movie's strangely conservative approach to gore and nudity (with a vengeance), as the eponymous antagonist bludgeons his way through a late night office party. It seems to be trying to say something about corporate excess, which just makes it funnier.
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