With Extensoft's app, you can capture the entire screen or specified areas of it. Captured images can be saved as BMP, JPG, PNG, and TIFF formats. Video captures can be saved in either WMV or AVI format—there are codecs for DiVX, ffdshow, and XviD, among others, for post-processing, and audio can be grabbed during video sessions as well. Almost all of the menu commands for controlling Extensoft Screen Capturer have corresponding keyboard shortcuts, making it easy to use mouse-free.
Screen Capturer is free but does require a basic name/email registration. The registration is sent instantly and requires no validation, so if you'd like to avoid using your primary email, a disposable one would work just as well. Extensoft Screen Capturer is freeware, Windows only.