This season and last season many shows seem to be recorded
very dark and contrast seems way off.

Examples are 30 Rock, Community, Modern Family a few other sitcoms and
just about any Crime drama that isn't CSI Miami.

30 Rock and the new Mr. Sunshine might be the worst looking shows
I've seen in years.
Too dark and contrast levels too low. Looks cheap.

Maybe it seems worse on a bigger screen, I have a 73" screen.
I know it isn't my set as MOvies look normal and every commercial
during these shows look great.

I actually made this exact comment in a recent 30 Rock thread. It looks terrible compared to Outsourced which is bright and colorful.

I've really only noticed this on 30 Rock. I'm not sure what the deal is with it, but you're exactly right...

no, you have glaucoma