The best thing about NBC's American version of Kath & Kim is its cast. Molly Shannon, Selma Blair and John Michael Higgins have all had flashes of brilliance in their careers, and occasionally have them here. The second best thing about it is that it comes on right before The Office, so it's pretty easy for us to remember to tune in a half hour earlier to watch it. Though like The Office, another import of a foreign comedy smash, it hasn't found footing in its first few episodes. We're pulling