Shit TV: But How Shit?

I've been contemplating obtaining some proper shit-but-fun films for xmas, to provide relief from my lowly, lonely, pointless existence. I've got the beginnings of a list, but I feel there must be more. I therefore solicit suggestions to function as addenda to this compendium:

• Star Trek III: The Search for Spock
• Star Trek IV: The Voyage Home
• Lethal Weapon
• Lethal Weapon 2: Diplomatic Immunity
• Beverly Hills Cop
• Beverly Hills Cop 2
• Die Hard
• Die Hard 2
• Ghostbusters
• Ghostbusters 2
• Who Framed Roger Rabbit?

I know I'm missing some obvious ones, but what?