B.M & D Records of the First Unitarian Church of Worcester, Massachusetts, 1785-1919
Early Worcestor Marriages - Late 18thC
Epitaphs from the Old Burial Field 1671-1826
Census-Online.com - census transcriptions for Worcester Co.
Interment.net - cemeteries of  Worcester Co.
Leg Cemetery - Records of Sterling, Massachusetts
Deaths of Finnish People in Lunenburg, Massachusetts, USA 1896-1968
Fitchburg; Vital Records of Fitchburg, Mass. to 1859
Harvard; Residents of Harvard, Massachusetts, 1866
Index to the Probate Records of Worcester County, Massachusetts
Spencer, Massachusetts Genealogy
Sutton Cemeteries
The Tombstone Transcription Project - cemeteries for Worcester Co; MA
Worcester County GenWeb Project a collection of online resources for genealogy researchers
Worcester County - American Local History Network has several pages of information for this county
Worcester County, NC Genealogy Forum read and post messages about your ancestors for this county
US GenWeb Archives for Worcester County cemeteries, newspapers, wills, military rosters etc recorded online here

Additional Resources

Massachusetts Obituaries enter your Massachusetts ancestor's name to search obituaries in over 75 million newspaper pages
Massachusetts Birth Records
Massachusetts Marriage Records
Massachusetts Divorce Records
Massachusetts Death Records