Alex Trebek's 31-year-old son, Matthew, is revealing the one clothing item he kept to remember his late father. While speaking to ET's Denny Directo via Zoom on Wednesday, Matthew opened up about some of the special items worn by his dad, who died in November after a battle with cancer.«I kept a tie that my mom had given my dad. As far as clothing goes, that was probably the most important item,» Matthew said.