2010 IN MEMORIUM: We lost two of the biggest child stars of the '80s in 2010. On March 10th, "Lost Boy" star COREY HAIM died from a combination of pneumonia and a bad heart ... 

May 28th saw "Diff'rent Strokes" star GARY "WHACHOO TALKIN' 'BOUT WILLIS" COLEMAN go into a coma after falling from the stairs at his Utah home. He died two days later, not long after being taken off life support.

But Coleman wasn’t the only classic T.V. star to leave us. 2010 also saw the passing of "Leave It to Beaver" mom BARBARA BILLINGSLEY, "Happy Days" dad TOM BOSLEY, "Golden Girls" RUE McCLANAHAN, "Designing Women" star DIXIE CARTER, PETER GRAVES of "Mission: Impossible" fame, "Greatest American Hero" star ROBERT CULP, and "Dynasty" patriarch JOHN FORSYTHE

The big screen wasn't without it's loses, either. Movie legends that passed included TONYCURTIS and DENNIS HOPPER.

Here's Part One of 2010's most notable deaths ...