The thing is, betting when you don't have a hand, doesn't make you aggressive. You HAVE to bet when you don't have a hand in a lot of circumstances - sometimes when you know the other guy has hit but he's hit a low hand and can be pushed off and you need the chips. Sometimes when the blinds are eating you alive and you need to make a move. But mostly when you dont' get cards, or keep missing and spot weakness. It's standard play. I don't think you can avoid any of the above and win games. You'd be totally reliant on gettng good cards and hitting the flop. - so basically everyone is aggressive post flop to one degree or the other.

The loose element (preflop) - well, like I said, that'd down to many factors.

You can't be successful in Tournaments and play tight/passive. Same for Loose/passive. You need post flop aggression to take the chips that no one else wants to fight for - so everyone, in my eyes, is aggressive post flop to some degree. Some people are far more aggressive than others - you know the types - they will try and buy every pot going. Regularly putting in big overbets to scare people off. Thing is that's risky and you need to know what to do when it goes wrong.

I find watching televised players very misleading. You don't get to see the 100's of hands they folded.

As for the all-in with 2 pair - I would not have done that. I'd have gone something like 1xpot - depending on the size, if a small pot, then 2 x pot or 3 x the pot. Enough to scare off most, and also find out if anyone is holding a monster. Going all in is not a good move. How do you know the guy on your left is nto holding KK? or 77, or 99? or 10J? (gutshot). You don't - so you are putting your game on the line for a complete guess. Why not use the betting to have a feel for what's going on at the table? - I know the guy was a dick - and you were unlucky - but that's not thte point. Be wary of the all-in button - it's a tool, and not an auto-win button. If you use it like that it's like pulling the handle on a one armed bandit :-p

Regarding live amateur games and playing against fish - well, the worst thing you can do is play like them. Instead, use their weakness to your advantage. Sit back, wait till you get a great hand, then let them bet into you. Let them think they are in control, when really you are. If you get involved in their wild card chasing with marginal hands, you are going to get stung badly. Only get involved when you are top dog. Then when you have won some decent chips, you will have already established a very strong image. NOW you can start playing looser and probing for hands, and if you don't hit by the turn, semi-Bluff with a large bet. They'll most likely fold as the only thing they've seen you do so far is win :-P

I played 2 live tournies recenly.

1st one was my 1st ever. Everyone was loose and crazy. I played along. Lost half my chips in 10 minutes. Eventually tried to out aggress the guy on my left with 99. He owned me. I was out in 40 mins.

2nd one, exactly the same type of players - all Gus Hansen/Phil H wannabe's. I sat tight and only played great hands, or cheap flops. People were mocking me, calling me "the rock". I got given a cheap turn and hit my flush after an hour or so and doubled up (they guy even said, "go on, show me your flush - I've got to see it - sigh" - and he paid!). I carried on like this and won a few more biggies. By the time I got to the final table I could semi-bluff at crucial moments (big pots) and the table would nearly always fold. As far as they were concerned I was "the rock" and they wanted nothing to do with my hands. I won the game.

The moral of the story is there is no defined style - only what suits the game at the time.