Kerr Smith — best known for his role as Dawson's Creek's token gay, Jack McPhee — is joining the cast of Charmed as a love interest for, um, a girl. Specifically, leading lady Rose McGowan. A show spokeswoman describes Smith's character as a homeland-security agent who believes in the supernatural. Says the rep: "He's sort of like Fox Mulder from The X-Files." He'll debut in October and, if my hunch is correct, start making eyes at fellow newcomer Nick Lachey by November sweeps.