I posted to a thread about AK just last week. Seems to be a popular subject lol.
Here is how I play it from most any posistion. If there has been no raises to me pre-flop I will make nice raise, maybe 4 to 5 times the BB. In doing this I'm trying to get a heads up at the table. If I get a heads up or 2 callers and hit a A or K on the flop I'm putting most if not all of my chips in the middle. If the pot has been raised to me or reraised I will play it with more caution. I have thrown it away if I have to do an all-in call preflop. Especailly if I'm on the bubble of a MTT.
But that is just one situation of many. You can't just say what you would do with it every time you get it.
MTT NL early on I will play it a little tighter. It's a long tourney I don't want to loose all my chips before I see the 2nd level of blinds.
MTT NL late in the game at the final table short stacked, all my chips are going in the pot. Chip leader with 6 or 7 people left, then someone elses chips are going all in lol.