I played live $1/2 NL hold 'em Saturday. A guy joined the table and sat to my immediate right. The first hand he straddled. When the betting got around to him, he raised and everyone folded. The next hand he raised again at his turn.
Mr. Aggro played just about every hand, and played them aggressively. Here's an example: The guy to his right raised preflop to $12, and he was the only caller. The flop was Q-Q-X rainbow. The preflop raiser had about $60 left, and bet $12. The aggressive guy moved all in. The preflop guy said: "I have to call. If you have a queen you've got me," and turned over A-A. The next two cards were dealt and Mr. Aggro mucked. He was representing a queen, that he didn't have.
Even though guys like Mr. Aggro can be tough, I love playing them. Two orbits later, several limped, Mr. Aggro limped, and I raised to $17 from the button -- only Mr. Aggro called. The flop was ♠A ♣10 ♦2. He checked and I bet $20 into about a $40 pot -- he called. The turn was the ♥5. He checked and I checked. The river was the ♥9 and Mr. Aggro bet $50.
I called and turned over ♥A ♥K. Mr. Aggro mucked.
I never saw what he had, but because I checked the turn, he thought it was his duty to take the pot away from me. Whoa, buddy, not so fast. Besides winning a nice pot, there were meta-game considerations. The next time that situation comes up, he may not be so fast to try and steal from a nice old man like me.