I remember a live NLHE game that i played with some friends and one of them when the flop came and he connect with the flop (top pair and better) looked away.. so i could catch him on bluff or bluff him away..
You would think you wouldn't see it but you actually do sometimes: where people give you "the speech" when they have AA preflop or some kind of monster post flop. Things like: "Well, I gotta go home, so I guess I'm all in". "I know you got me, but I guess I'm all in". "Your raising, huh? Well, I guess I'm all in. Send me home".
My favorite question in a live poker game is: do you want me to fold my cards? usually it makes the opponent confused and you can guess by the reaction, try it sometime
I got asked that question more times then any other playing live poker. at first you are right, it catches you off guard, which can reveal alot to your opponent. especially if you are on a bluff. after further consideration I give the same reply to that question to all my opponents. in order to relay the pressure on them without giving anything away. i tell them "look if you fold i win 100% of the time everytime. if you call you might have a percentage or 2 hope"