i dont know if this have been bringed up before, but anyway:

so during the day, i have my wii hooked up to my old 4:3 crt tv to play games on (i prefer crt for the wii games).
but during the evenings/night i hook my wii up to my hdtv, to watch movies etc. and so, wiimc runs at 4:3 because the system menu. not that it is a huge deal to keep changing in the system menu, but still, it would be cool if wiimc could force 16:9 or something 🙂