In the legal papers, obtained by TMZ, Nicollette is suing for assault and battery, gender violence and wrongful termination.
Sheridan is suing for more than $20 million.
In the lawsuit, Sheridan claims Cherry created a hostile work environment from the get go, "behaving in an extremely abusive and aggressive manner toward the individuals who work on the show."
Sheridan says during the 5th season, Cherry put her in his crosshairs. She claims on September 24, 2008, he physically assaulted her after she questioned him about something in the script. According to the lawsuit, "Cherry took her aside and forcefully hit her with his hand across her face and head."
According to the suit, after the alleged incident, Cherry went to her trailer to "beg forgiveness."
Sheridan says she immediately reported the incident to ABC, but Cherry's aggressiveness only worsened and ABC failed to take action.
And get this ... The suit alleges when Cherry found out Teri Hatcher went above his head to complain about him, he said, "I hope Teri Hatcher gets hit by a car and dies."
And, she says, she was killed off the show unfairly.
UPDATE: ABC tells the L.A. Times "While we have yet to see the actual complaint, we investigated similar claims made by Ms. Sheridan last year and found them to be without merit."