So, I just got Phoenix Write: Ace Attorney for my DS (OMG @ CASE FOUR), and I got so caught up in the courtroom drama that I can't put the thing down! I don't usually play my DS for extended periods of time like I do my Playstation, so my wrists feel a little twitchy...seriously...I keep having to shake 'em out. I even played Stepmania left handed!
Also I caught myself rooting for Earl to prove his client innocent while watching My Name Is Earl...and then I was like...WTF...Earl is not a lawyer...I'm playing my DS too much.
What sort of odd effects have you experienced from doing one thing for more than five hours O_O