The other two episodes this week were purely episodic bsns, but all the cameos in "Jake the Brick" were cool, and in "Dentist",
Finn used his last name. Or the Finnsword did? - couldn't quite tell if that was the reflection of him talking to himself or if it was an actual little Finn in the blue orb. But either way, it was an omg moment for me, since until now, iirc the "Mertens" surname was exclusive to the Farmworld Finn, with Martin not even using it. Hopefully it wasn't just sloppy writing, but rather, a deliberate Easter Egg, perhaps relating to the sword originating from an alternate Finn? Guess we'll have to wait and see if it happens again...