1)   Windows Hider Pro 1.51
Windows Hider will allow you to hide specified groups of windows just by pressing a single Hotkey (or a combination of Hotkeys). Most of the time, program works in the hidden mode, not making anyone know that it is there.

 2)   StopCop Popup Software 2.03b
Automatically kill annoying pop up windows. StopCop will stop all possible types of popups, including windows spam messages, browser popup windows and pop-under windows, and even in-line browser advertising popups.