There was considerable actor crossover between "Warehouse 13" and "Eureka'. Not only did Allison Scagliotti appear on Eureka as her Warehouse 13 'Claudia Donovan' character but Neil Grayston appeared on Warehouse 13 as his Eureka "Douglas Fargo' character. In addition Erica Cerra (Eureka's Jo Lupo), Joe Morton (Eureka's Henry Deacon) and Niall Matter (Eureka's Zane Donovan) appeared on Warehouse 13 as other characters. Cerra and Matter were husband and wife con artists and Morton was a prison preacher. Likewise Saul Rubinek (Warehouse 13's "Artie") appeared on "Eureka" as Dr. Carl Carlson.
Y'know what the Talmud says? When someone's comin' to kill ya, get up early, kill 'em first.