There's one damn mission I'm at in PoR. The one where you recruit Zihark, and make sure you don't kill Jill. Well, first, I tried to talk to Jill with every damn character. No response. So I realized I had to wait. Now, I keep getting killed by the Black Knight, as he appears midway through the chapter.
Randomly started cursing/swearing
Scream out/ Shriek battle cry in triumph
Copy the mannerisms of your character (stab, shoot,....grunt)
Pretend to be exhausted yourself after a hard fought battle (Kill a Colossus anyone?)
Sweat in anxiety when puzzles/bosses can't be figured out
Lean back/forth with the controller
Make a remix in your mind to a game's soundtrack
So I've done all those.