Showtime’s new series, Nurse Jackie [Mondays, 10:30/9:30C], may be even darker in tone, and more grimly hilarious than Weeds, the show it follows on the network’s Monday night summer schedule. Jackie Peyton [Edie Falco] is a dedicated nurse who is not afraid to tear a strip off a young intern who thinks too highly of himself; mentor a new RN; lock horns with the bitchy ER administrator, or cheat on her husband. She loves her kids; needs pharmaceutical aid to get through her day [What do you call a nurse with a bad back? Unemployed.]; and somehow seems to be able to make all the various strands of her life wind together – or maybe not… From the six episodes that Showtime provided for review purposes, it’s clear that Jackie is simultaneously incredibly noble and horribly flawed.