My first big revolution was broadband two years ago when I moved to Japan. It opened the door for VoIP international calling, Bittorrent downloads, large file swapping, blogging, podcasting, and a huge spike in my surfing habits.
Enter WiFi... in the past couple of days I've unleashed my laptop - mostly for kicks. But, it also lets me close the door to my study which means one less area to heat depending on what I'm doing in the apartment.
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The real benefit is using my PSP to surf in bed. The screen is large enough that I can view a decent portion of web pages while browsing. I can check blogs, news, email and my favorite websites as though I were reading a book before sleeping! This thing has changed my lifestyle! Unfortunately, the PSP doesn't have a lot of onboard memory for high speed browsing, but that isn't much of a problem. I can't wait to try out an online game using the PSP in infrastructure mode!