That’s rather a good question.
Personally, (and I’m just looking at my apps folder here) I’m pretty limited. Aperture, FaceTime, Safari, iTunes, Rosetta Stone. I use Google Apps for word-y/excel-y type things. This iMac here’s pretty barren.
Professionally, TextWrangler for (shell) script writing, Terminal (yes, Terminal), Xcode… that’s about all the work stuff I should talk about.
I used to use the computer a whole lot more at home and I didn’t really like what it did to me. Just always plugged in. Since getting an iPhone, this has changed. Being “plugged in” is still accessible, but it’s more utilitarian now. Streaming podcasts? Sure. My next move on WordsWithFriends, yep. Buying something on Amazon because I just scanned the barcode and found it’s cheaper there than the thing I’m looking at in the store and I just have to wait 2 days for it? Absolutely.
I’ve found my quality of technology interaction has considerably improved since minimizing my use of the iMac at home.