Vichar Bhatt has pointed out it is possible to install the Suse Linux Enterprise Desktop start menu on OpenSUSE 10.1. Because the codebase is the same installation is straightforward, all that needs to be done is install the relevant rpm for x86 or x64 and then enable the menu applet within Gnome.
The upshot of all this is you receive all the usability benefits of SLED without having to fork out any cash. It is a great tip and it really improves the OpenSUSE experience, especially now that they have released the remastered version of 10.1 which includes the working Zen update mechanism.