Corey Clark -- Sooo Creepy ... Wife Says He Stared Her Down For Hours

Former "American Idol" contestant Corey Clark gave his estranged wife a serious case of the creeps -- allegedly stalking her around town and staring her down for hours at a time.

According to Clark's arrest report, there were several instances where he violated a protective order his wife had against him. The report says he was only allowed to communicate with Monica Clark via email and only to discuss their children.

Monica says Clark took it one step too far when she stopped replying to his emails. She claims he started to follow her, and in one instance, Corey allegedly sat outside a restaurant where she was eating dinner, and stared for hours.

In the docs, Monica says Clark hounded her about her new relationship in emails -- which would be a clear violation of the protective order.