i really like the cmd-b go-to reference feature. is there a similar mechanism (like cmd-o) that would just let you type in an arbitrary function name and go to it?

Like Go To Symbol? (https://www.jetbrains.com/help/idea/navigating-to-class-file-or-symbol-by-name.html#d371836e25)

yes! thanks!

FWIW, Find Action is also really useful if you can't remember the keyboard shortcut for a Paredit command, for example (https://blog.jetbrains.com/idea/2009/06/find-action-saves-time).