[crb]

Hold Shift while hitting the green plus ("resize window") button to make it maximise the window.

[msluyter]

Holy crap! I wish I could give you multiple upvotes for this. I wonder if there's a way to make this the default? This reminds me that I really need to spend a couple of days delving into basic OSX functionality (features/keyboard shortcuts). There are probably a ton of other features like this that I'm oblivious to.

[vbo]

Cheers for that, I've been mildly annoyed with the resize button for years but never enough to look for a solution. This works great.

[Vecrios]

still, doesn't work for me! what version are you using?

[vbo]

Using Lion, but I recall doing this for some time (Tiger?); I may be wrong. Do you have tap to click enabled?

[driverdan]

IIRC it was introduced fairly recently, either Snow Leopard or Lion.

[Angostura]

It is app-dependent too.

[evanmoran]

Holy crap part 2. I've been looking for that for a long time!