Currently my Wii is downstairs, I think it's a 32" widescreen (nothing bigger will fit there, also might be 36", not sure)
Usually it's in my bedroom on a 15" portable.
I won't be buying a HDtv for a long while, probably when I can actually get HDtv (programs) because at the moment there are about 3 HD channels.
I rarely watch DVDs (I have pulp fiction and some family guy DVDs) so HD discs don't matter to me.