I've wasted many hours looking for a utility that could take a screenshot of a complete webpage even though it scrolls past the viewable screen area.  Such utilities have existed for some time but they all required purchasing and none were at a price compariable to it's usefulness.  So until now I've had to manually crop, copy and paste multiple screenshots of a web page to get a full image of it.

Screenshot Captor is donation-ware from DonationCoder.com that not only 'Autoscroll' captures content larger than the screen, but it can also grab text from dialogs that you can't normally copy text from. I.e. Error dialogs - how many times have you had to manually type out an error message or error code so you could search it on Google.

DonationCoder also has a bunch of other useful application worth checking out. Notably, Find and Run Robot and Process Tamer.

Update: I should point out that before Screenshot Captor I used WinSnap. WinSnap has one advantage over Screenshot Captor and that is that if you have a Windows skin with transparency (such as rounded corners) it won't capture the background in these areas.