by Leyla MohammedBuzzFeedBuzzFeed StaffAs a Celebrity Reporter, I cover everything from fashion and award shows to TV, film, and cultural conversations. The "In Memoriam" segment at this year's Oscars, which took place on Sunday night, paid tribute to several celebrities who sadly died over the past year. Patrick T. Fallon / Getty Images Billy Crystal started the segment with a tribute to Rob Reiner, who was tragically stabbed to death in December. His wife, Michele Singer Reiner, was also found dead with stab wounds at the couple's Los Angeles home. Alberto E.