Thanks to Fish Griwkowsky for this video clip, which features an MSNBC commentator denouncing the mephistophelian Ann Coulter in stunningly strong terms.    From Wordnik.com.  [Even Tucker Carlson finds Ann Coulter too much] Reference

Senate Republicans, if handed a recommendation to impeach by the House will be faced with a very tough choice as the world watches them confront a most stubborn, arrogant and unrepentent Connecticut Cowboy President and his mephistophelian inner circle.    From Wordnik.com.  [Impeachment: A Moral Imperative] Reference

They were almost mephistophelian, and unpleasantly noticeable, drawn thus nearer to the wide wave of her white hair.    From Wordnik.com.  [No Clue A Mystery Story] Reference

You guys are positively mephistophelian.    From Wordnik.com.  [Wired Campus] Reference

The face was almost mephistophelian in effect.    From Wordnik.com.  [The Master of Silence] Reference