I can't even count the number of times I've hit ctrl+r to type to someone. And I'm also guilty of hitting L1 (or LB on my 360) to keep my character moving in other video games.
You know you're addicted to FFXI when you start saying auto translate phrases IRL. I'm not kidding. I've been known to say 'do you need it?' and 'can I have it?' IRL. (And nothing beats saying el-oh-el out loud.)
Also, I work at a video store. Every weekend, the new releases for that week just completely fly off the shelves, and 9/10 customers are looking for the same movie. When one comes back and we check it in, we pretty much put it back out immediately. When you're out there putting one back, you can already feel everyone's eyes watching you as they hope to see the movie they want go back on the shelf. No lie, I've tried explaining to a coworker that this must be what an NM feels like...
The other day, I was playing Robotron with some friends, and I told my friend to watch out for the mobs on the bottom of the screen. They all just looked at me funny. <.<