What is the first app I should install?

[Jomskylark]

I'm planning on purchasing a 13 inch 2.4 GHz MacBook Pro soon, and I wanted to know: What is the very first application I should install? It doesn't have to be free, but it probably shouldn't be too much money.

For all you gamers, what is the first game I should install?

EDIT: I'm looking to use the computer for competitive gaming (I know, not the best choice) as well as productivity. Also feel free to post your own apps

 

[spinnerlys]

Does it have to be a game or can it be any other kind of application?

I always install iStat Menus first, to know what is going on with my machine.

Other than that depends on your usage of your computer.

Oh, one of the many of hundreds threads about the almost same issue.

 

[kasakka]

SteerMouse (if using Apple Magic Mouse) or USB Overdrive (if using any other mouse) if you prefer having a mouse cursor that doesn't move like it's stuck in mud.

 

[hoodgyno]

Firefox. Safari is a great browser but you need something else on hand as well.