"Russian Doll" is a lackluster tale about a married Aussie man who is having an affair with a beautiful Russian woman whose visa is about to expire and talks his best friend into marrying her so she can continue to live in Australia. What could have been a cute romantic comedy built around an unoriginal plotline tries hard and has its moments but suffers from low-budgetness, a uninspired script, and a very plain and ordinary execution. The film is little more than a diversion for the needy sofa spud now on cable. (C-)