Excellent "laptop" performances are not necessarily the most accessible spectator events. Without understanding the fundamental processes of programs like Max, Supercollider and Pd, everything seems like Waveplayer -- completely pedestrian and unintuitive.
Regarding environmental DSP and programming, computers are, as Mr. Girlz Talk says, very exciting tools for music production and (most importantly) performance. Again, that's not saying music made through and by the aforementioned programs will be "better" than other forms. (Quickly: who is the "rap computer" again? Is it Trembling Eagle?)
Open environment music software has undoubtedly helped expand the possibilities of participatory musical experience. Take, for instance, the work of megagenius Luke Fishbeck (aka Lucky Dragons).
[youtube]http://www.youtube.com/watch?v=Oqkqgq867j8[/youtube]