Actor Jeremy Piven is throwing his support behind a fundraising initiative to mark the centenary of World War I. The Entourage star will be taking part in a daredevil stunt in The 100 Year Challenge, a year-long fundraiser for the National Memorial Arboretum in Staffordshire, England, which is a site of remembrance for fallen soldiers. Piven has the choice of either skydiving or abseiling later this year (14) to raise money for the cause, and all the proceeds will go to the Arboretum. He says, "I feel honoured to have been asked to support a charity that I feel so strongly about. I wanted to do more to honour these brave service men and women, so I didn't hesitate to get behind the 100 Year challenge and I'm very much looking forward to taking part." The subject of the First World War was predominately featured in the second season of Piven's popular period drama Mr. Selfridge.