Calling all fans of CSI:this that and the other, 24, Without A Trace, etc etc etc ad nauseum. Check out NCIS - it's fab.
The premise: admittedly somewhat weak. A crack team investigates crimes in the NAVY or involving Navy personnel or otherwise tenuously linked to the boys and girls in blue.
The result: fantastic thanks to unusually good characterisation and dialogue.
The characters:
Gibbs - the requisite (since CSI) senior male team leader who's there to be omniscient, omnipotent and generally perfect.
Tony Di Nozzo - hot, hot, hot and also blessed with brilliant comic timing and gets all the best lines
Ziva - his sparky female (Israeli) partner
McGee - bumbling newbie
Abby - six-foot Goth who does the science stuff and has a strangely sentimental relationship with Gibbs
Duckie - David McCallum, bless him, as the cranky English pathologist
You'll find NCIS, if you haven't already, on Channel 5 on Fridays. You can also, like me, watch earlier series on SFX the same night and get confused about the timelines.
But I really hope some other mumsnetters already indulge in NCIS and can at least confirm the hotness of Tony Di Nozzo.