When a hand is heads up, I absolutely HATE when the "villian" checks it to me, I raise, 50-75% of the pot, and he calls.

Turn comes, same thing happens.
River comes, same thing happens, even if I bet higher.

Sometimes they have shit, sometimes they have a monster that they slow play. Does check-calling ever really represent the strength of somebody's hand? Argh I just hate going up against it.