How about pinch running with two outs and a runner on first in the 7th and 8th inning so then when the game goes to extra innings we have Alexi Casilla hitting instead of Josh Willingham or Justin Morneau?
Or perhaps bringing in Matt Guerrier in to face Alex Rodriguez with the bases loaded? ( A-Rod is something like 8-11 for 6 homers against him). No manager is perfect obviously but I would not really say Gardy is a strategic genius. He has had some puzzlers from time to time. These are just the few off the top of my head that kinda irk me

