These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Funny Moments: After Zelig returns to America after falling in with Those Wacky Nazis, by becoming the first man to fly over the Atlantic Ocean entirely upside-down:
Zelig: It shows exactly what you can do, if you're a total psychotic!
Older Than They Think: The idea of having a fictional character meeting tons of famous people (and altering photos and videos to make the fictional character look real) is associated with Forrest Gump, but this movie popularized the concept.
Though Gump was to first to actually have the new character physically interact with historical figures; Zelig is always fairly obviously pasted into the old footage and never interacts with it.