Here is a scan from http://www.stockcharts.com that may be of use in finding similar plays:
"http://stockcharts.com/def/servlet/SC.scan?s=TSA[t.t_eq_s]![t.e_eq_n]![s0,20,v0_gt_40000]![C1_LT_X1,10,C]![H0_LT_L1*0.975]![L0_NE_H0]"
It's a new scan called "Runaway Gap Downs" if the url doesn't...