Here's a story.  About a month ago I was at a wedding in the Florida Keys.  

It was a great night that ended with everyone, in full wedding gear, jumping in the pool. My little brother also happened to jump in the pool.  Unfortunately he had his iPod Touch, his phone and my phone (my precious G1) in his pocket.

So for a month, I went without a phone.  It was during this time that I realized just how much I use my mobile for actual workshifting.  It's beyond  just novelty, I was probably half as productive last month without my phone.  I missed meetings.  I couldn't connect with my team.  I was late to meetings.  I wrote less blog posts.  I created less content.  My twitter friends thought I was dead ... more than once.