I remember that I was looking at an interesting note very recently, but I don’t remember what it was.
Proposed solution
Show a list of recently viewed notes, with the most recently viewed at the top. (Perhaps the list could show something like 20 most recently viewed notes.)
Current workaround (optional)
EDIT: I guess this is already possible as per Ryan’s comment below.
This is not exactly what you’re looking for, but the quick switcher (default hotkey is cmd/ctrl+o) shows a list of the most recent notes when you activate it.