YouTube is now featuring content from the BBC in the form of two new branded channels, one for BBC local programming, and another for popular television programs on their BBC Worldwide network. A channel with daily clips from BBC News is soon to follow. The BBC won't be offering its programming in its entirety, just promotional clips like extra scenes, previews, recaps, and production diaries.
In light of this, I'd like to see the BBC move to something similar to what American networks have been doing, offering full versions of their content on their Web sites with supplemental advertising snuck in during the show. The BBC had this with their iPlayer project last year, but that has since been shut down for evaluation. Short clips can be fun, but not interesting enough to combat piracy or retain viewership in the long run.
In the meantime, you really should watch this.