NBC had Milton Berle in 1948.
CNN had Baghdad in 1991.
FOX had the NFC in 1994.
Ustream has Charlie Sheen in 2011.
Each broadcast event was a tipping point. It made people pay attention. It helped make the network.
Love it, hate it or just can't help but stare at it, Charlie Sheen and his "Sheen's Korner" online show is "winning" it for Ustream, helping it bounce to a new level of mainstream consumer awareness.