There are two very good reasons to see the musical Dogfight at San Francisco Playhouse. The 2012 stage adaptation of the 1991 movie starring River Phoenix and Lili Taylor has its moments (mostly thanks to the emotional score by Benj Pasek and Justin Paul), but what really makes it connect are the lead performances by Jeffrey Brian Adams as a U.S. Marine with more depth under his gruff military exterior than even he may realize and Caitlin Brooke as a San Francisco waitress/folk singer who is smarter, stronger and more compassionate than anyone the Marine has ever known (or probably ever will know).