Erin Cummings (The Iceman) has signed on for a lead role opposite Richard Dreyfuss in ABC's miniseries Madoff. Cummings will play Eleanor Squillari, personal secretary to Bernie Madoff's (Dreyfuss), in the project from ABC News' Lincoln Square Prods. Inspired by ABC News chief investigative correspondent Brian Ross' reports and his book The Madoff Chronicles, the mini follows the rise and spectacular fall of the now-imprisoned swindler and the $65 billion Ponzi scheme he…