I find this to be an incredible annoyance on iOS, particularly iOS 5 and earlier, but I have to say that Android really nails this experience with the 'intent'

I find this to be an incredible annoyance on iOS, particularly iOS 5 and earlier, but I have to say that Android really nails this experience with the 'intent' model - I don't think twice before opening Google Maps directly from a Google Calendar event that was itself created directly from an email that I read in my inbox.