In 2007 Steve Jobs strode up onto the Macworld stage, rehashed the Apple TV for a bit, then dropped the shot heard around the consumer electronic universe: iPhone.
In 2008, it was Time Capsule, an iPhone OS update, Apple TV Take 2, and the MacBook Air.
And in 2009?
Er... um... we're not even sure he's going to be there, according to Businessweek (via MacRumors):