It would be better for me if my competitors' leaders were incompetent. When they're not, they should at least be as articulate and clear as Microsoft's Steve Ballmer.
He was spot on in his comments about social networking sites (e.g. ones based on attracting university students will find that 25% of their customers graduate every year... ouch!)
What I found most interesting, however, were his comments on Web 2.0 valuations. His inability to justify some of the valuations should be a warning to us all: I really hope we're not about to enter bubble territory again.