When I can't sleep I get the most intense hallucinations / concious dreams, my room is suddenly split up and I have to go around controlling everything. That's about as much as I can remember but believe me it's hell (can't sleep for hours after / during it and it is rather scary), I can't even get myself to leave my room when I get it. But to a specific game, I never get anything.
Guitar hero thing is just because the note highways are that way (just stand right next to the TV and look at it at a downward angle, somewhat interesting), but I've seen a crosshair at most.