Why you should be watching ''Karen Sisco''
WHAT IT IS Sisco (Carla Gugino) is an ambitious United States marshal who does a better job of collaring bad guys than snagging dates.
WHY IT'S GREAT Gugino crackles with sexy cool, and her repartee with on-screen dad Robert Forster promises more interesting story lines are in store.
WHY YOU'RE NOT WATCHING Tough cookie Karen may not have been romantic enough to hold on to ''Bachelor Bob'''s audience on Wednesdays -- the show's been put on hiatus until March.
WHY YOU SHOULD (WHEN IT'S BACK) A smart, sophisticated gun-toting babe: What could be a better antidote to Jessica Simpson?