I own a Macbook Pro and use G4s at the university where I teach Music Technology. I also have a not-jailbroken iPhone on which I keep up-to-date with the latest podcast and iPhone apps from the iTunes store.
I produce using Logic Studio 8 on my Macbook Pro. I play a Fender Stratocaster Vintage Reissue through a Marshall amp and use modded Boss compression, overdrive and reverb pedals. I currently play in a few music projects check my MySpace to see what I'm up to at the moment.