Everth Cabrera, Padres: Cabrera has swiped three bags during the past week, and five in the last two weeks. While his average still sits at .240, he's on pace for another 30-steal season, and should be able to compile another 8-10 more steals before the season ends.
Cameron Maybin, Padres: It's been a disappointing year for Cameron Maybin, but he's been heating up lately. With a .421 average and three steals during the past week, he's been one of the hotter hitters in the National League recently, and is widely available in most formats (39 owned in Yahoo!).
Nate McLouth, Orioles: I just added McLouth in one of my deeper mixed formats with the hope that he continues stealing bases at a decent clip. He's picked up a pair of steals in each of the previous two weeks, and has five in 19 games since joining the Orioles. If he can keep his average in the .240-.250 range in Baltimore, he makes an interesting play.
Ben Revere, Twins: Revere keeps churning out the steals, with two during the past week, and six in August. Now at 30 steals on the season, he has an outside shot at 40 if he can put together a few hot weeks. He'll be a strong source of average and runs, and is available in most formats (39 owned in Yahoo!).
Billy Hamilton, Reds: Looking to catch lightning in a bottle? Hamilton just broke the all time minor league steals mark held by Vince Coleman, and now sits at 150 on the season. The Reds are considering brining him up as a spark off the bench in September, and he's likely to get plenty of chances to steal as a pinch runner. He's the type of high upside play that clinches a championship late in the season.