When I need infielders it's:
Bill Mueller (DL right now) - picked him up when Chipper went down in April and he hit 2 of his 3 ding-dongs on the year.
No power but consistently around .290 AVG/.365 OBP. Had him a few times the last couple years when Chipper went down. Never completely horrible.
Mark Grudzielanek - don't know why, but he never kills me when I've had him in the past.; seems to hit near the top of the order mostly.
Todd Walker - nobody ever wants him, but he always seems to hit close to .300 with the odd ding-dong.