Ezri Dax.

Normally when an actor decides to leave a show early, it doesn't turn out well. It means either the death of a beloved character or an almost always-failed attempt to continue the role with a different face. When Terry Farrell left DS9, however, the writers seized the moment and used the twist to tell Dax stories that weren't possible with Jadzia. While it took many fans a while to warm up to Ezri (some may still be trying) it all turned out well in the end. In this episode of The Orb, Matthew Rushing and Christopher Jones take a close look at the new face—and old worm—in town, and how Nicole deBoer's portrayal of a counselor who was unsure of herself was the perfect fit for DS9.