Angela Lansbury Recently Seen In: Mr. Popper's Penguins, Nanny McPhee Sinister Former Role Tainting All That's Come Since: Loving mother Eleanor Iselin in The Manchurian Candidate
In terms of parental figures cynically exploiting their own offspring for a nefarious agenda, I'd have to rank Mrs. Iselin somewhere between Billy Ray Cyrus and Dina Lohan.
Paul Reiser Recently Seen In: The Paul Reiser Show, all seven episodes of it. Sinister Former Role Tainting All That's Come Since: Dutiful company man Carter Burke in Aliens
In all honesty, I can't decide which was worse: Burke's attempts to infect Ripley and Newt with xenomorphs for the Weyland-Yutani company, or the entirety of Mad About You.
Alan Rickman Recently Seen In: Harry Potter and the Bottomless Pit of Money Sinister Former Role Tainting All That's Come Since: "Exceptional thief" Hans Gruber in Die Hard
Flawed husband in Love, Actually? That's nice. Alexander Dane in Galaxy Quest? Swell. Even Severus Snape pales next to the sheer villainy of Gruber.