Nothing much related to this topic but, I believe the music and sounds also make a huge impact on people's view of the gui. For instance, when I think of games such as GooBall then I seem to remember how brilliant they were because I loved the little sounds and the music. The menus themselves are only lists and a map when choosing your level, but I seem to rate that game higher mentally than other games with graphics like it.

[EDIT]Forgot to add that I was talking about gui for the last sentence. So here it is: ", gui-wise."