In this question, he was asking about keyboard shortcut to switch tabs. But this shortcut moves the sheet backward or forward, which means that pressing Ctrl+PageUp on the last sheet doesn't move the first sheet.
Is there any shortcut which allows circular switching (like Ctrl-Tab in Windows)?
Ctrl+Shift+PageUp(or any other key combination that works for you) – jonsca Aug 18 '11 at 12:45