I’ve just come across a really helpful and useful keyboard shortcut.
When in remote desktop, it is difficult to return to the local computer unless your logging off. The keyboard shortcut for minimising the window seems to be undocumented anywhere!
Press control, alt, pause and break to restore the window then straight away, before you do anything else, minimise it before using alt tab. When you return to the window, use control, alt, pause and break again to restore the full screen mode.
No more using the task manager to jump between the local and remote machines.