If anyone needs evidence of how deeply damaged Charlie Sheen is, they should watch last night's edition - bad word in this context, but I can think of no other - of "Sheen's Korner," his UStream quasi-radio-talk show. Launched Saturday night - and seemed relatively harmless - but Sunday was simply troubling: An expletive-filled mess, and apparently a drug-addled one. Sheen - if anyone needs reminding - is not in a funny place, but a very harrowing one. I predict that unless something happens to straighten this out, and by this I mean him, the "Two and a Half Men" run isn't the only thing that's over. Even though the jokes continue, this is simply not a laughing matter.