And the list begins; while needed to ingiltrate something I will give a peptalk to my character and/or companions and then usually draw out the plan, I talk as if I was my character every now and then, I talk in my head to my character and have conversations, I laugh at NPCs and call them noobs if they are stupid, I tend to sracth my head with my foot if I need to scratch while intense gaming, I tend to make sound effects and I also pick my upper lip during cutscenes or pretend Im playing.
EDIT: If something is coming at me, I lean in RL but not in the game and if I'm scared or something is coming at me I also close my eyes at times and usually die(this also applies to while Iim hiding and there is an enemy nearby) I do whisper while stealth as well