50 year-old award winning "Friends" star, Charlie Sheen is set to announce Tuesday he is HIV positive. According to People and TMZ. NBC News announced Monday that Sheen will make a "revealing personal announcement" in an exclusive, live sit-down interview on Tuesday with Matt Lauer, but did not provide further details. Sheen in 2011was dropped from Two and a Half Men amidst a notorious public meltdown. His ex, Bree Olsen says she is clean.