There are at least three different Cairo TT fonts out there. One does have the moon character problem--I noticed the same thing on one of my Macs. It seems that particular glyph is corrupted in the font.

There's a second variant which doesn't have the problem but is less true to the original, as the TV has a black screen (the original font has a white screen). I have this one on another Mac at the moment.

Somewhere I have a third version which has a good TV and a good moon but has eyeballs in the glasses. I'm almost positive it's on the Macintosh Revelations CD (a BMUG compilation).