How about under the room (along the garage ceiling) and back up?
Another alternative is out, then along an exterior wall, and then back in. I did that for my PJ; the room interior looks flawless, and the effect on the outside is very slight, especially after painting. And that's with Component, HDMI and S-video.
Another alternative is out, then along an exterior wall, and then back in. I did that for my PJ; the room interior looks flawless, and the effect on the outside is very slight, especially after painting. And that's with Component, HDMI and S-video.