Sesame Street?

I never saw that, but I have seen Hong Kong vampire movies where the undead can only move by hopping.

[off topic] 'Anno Dracula' by Kim Newman is the first book in a series where Dracula kills van Helsing and marries Queen Victoria. Now Prince Consort, Vlad ushers in a new age of undead terror. The novel features characters like the Elephant Man, Mycroft Holmes, and other contemporary literary characters. The series moves forward in time with 'The Bloody Red Baron' [WW1] and 'Johnny Alucard' [1970s]

it sounds really familiar but can't place it.

There's an X-Files where they have to count seeds.

Not sure it would be dirt. More likely to be small distinct things like seeds or rice.

The X Files had an episode like that. It was pretty funny.