- Weebo's death. Danny Elfman's music makes it all the more effective.
- What makes it sadder is that Phillip and Sarah return to his house after a successful meeting with a car executive, and they're laughing until they see the door is hanging off its hinges, then make their way to the basement where they find Flubber missing and a badly-damaged Weebo on the floor with battery fluid leaking out of her, looking an awful lot like blood. Weebo displays some minimal life and Phillip tearfully assures her he's going to fix her. Then her screen goes blank. Phillip's quiet "Goodbye, my friend" tops it off. Devastating.
Tearjerker / Flubber