Salesforce.com is the primary tool for my business. I can use it to access my client data from any place (or phone), so long as I have a signal or internet. I can also host a local version of my database as a back up, in case I'm without internet access. It is the single most important tool in my business.
Pandora radio is the personalized internet radio service that helps you find new music based on your old and current favorites. Create custom web radio stations, listen free.
Pandora Radio has got to be my all time favorite technology breakthrough. After clearing my search history several months ago, I could no longer access my Pandora Radio account. After four years of "thumbs up" and "thumbs down", I was devastated that I couldn't get to my personalized radio stations. I contacted customer service and the tech support guy was able to figure out that on my initial set up there was a typo in my email address. I was over joyed when I saw my favorite personalized radio stations glaring back at me.
I thank God for Pandora every day, I'd never make it through a single day at work without it. I love how it personalizes my musical tastes based on the "thumbs up" "thumbs down" I give the songs. My only quarrel is that I can't just look up a song and listen to it right then. :D