I sometime want to open a file from the finder in another Application.
I do this often enough that I made this Automator Service to help me go straight to the Choose Other application Dialogue rather than use the Mouse and menu Navigation.
There are I discovered other ways of doing these including mapping the “Other…” menu item to a shortcut in the System Prefs Application shortcuts. But this does not work for me in Yosemite .
The Applescript code in the image below is selectable, so you can just copy it from there.
After Saving the Automator Service go to System Prefs. and add your shortcut to it.