Post your best expert play!

It would be interesting to start a discussion about NLHE "expert play" that may throw off your opponents and add some EV to your poker results. I'm aware that some moves might work at some levels but not at others, some work against certain type of players while against some it wont, so please include the overall context. Maybe you can illustrate your maneuvers by posting hands where you actually tried it out.

I don't regard myself as an expert but I will contribute with a few ideas that it would be interesting to hear your comments about.