Share your passion. If you can't find enthusiasm, find an angle. Link the new performance-management system into how you helped your son transform his grades, or how your football team shot up the league. Showing you care brings a topic to life.
Surprise 'em. Russian leader Nikita Khrushchev banged his shoe on the table in response to a speech criticising the Soviet Union's role in eastern Europe. Unconventional responses to familiar situations get our attention.
Create empathy. Give natural synergy a nudge by consciously matching others. Try speaking at the same volume or pace, and reflect movement. Be subtle though. You'll know it's working when you laugh and they laugh too.