I've recently moved from using Parallels for browser testing to Sun's Open Source VirtualBox. Here's a walkthrough on how to get a browser testing suite for free on OSX or Ubuntu.
In the left corner is my beloved OSX. In the right corner is Ubuntu, the Open Source upstart. Let battle commence..
Coming from a Nokia I found it frustrating that you can't completely turn an iPhone off at night and be woken by the alarm. Thankfully there is a workaround.