How to get alt-tab on GNOME to cycle through applications like Windows?
This worked for me in gnome 2.30.
System->keyboard shortcuts -> disable shortcuts for "move between windows using a popup" and "move between windows immediately" (select with mouse and press backspace)
Open terminal and type gconf-editor
navigate to apps-> metacity ->global keybindings
3a. for the entry : "switch_windows" type "<Alt>Tab" without quotes
3b. For the entry : "switch_windows_backwards" type "<Shift><Alt>Tab" without quotes
navigate to apps -> metacity -> general
4a. Disable compositing_manager (this gets rid of the super annoying delay before the popup displays when you press alt+tab)
hope this helps
Cheers/Raj K
ALT-Tab is the default for cycling running applications in Gnome, like Windows XP does.