CORY MONTEITH, who played romantic lead Finn Hudson on TV's Glee, was found dead in a Vancouver hotel room on Saturday. He was 31. The Canadian-born actor had checked himself into rehab in March; although much speculation following his death centered on drugs, a cause of death has not yet been formally determined. Monteith, who often played drums during Glee numbers in addition to singing, was linked romantically, both onscreen and off, with co-star Lea Michele. Our heartfelt condolences go out to everyone who loved him. (7/15a)