Best Supporting Actor: Testing?

Recently, I've been interacting with people who seem to think Testing simply supports development efforts.  I envision Gregory Peck as Developer, walking into a fashionable room.  Nice wooden furniture, strong shadows, heavy curtains... all rendered in black and white.  I now look outside of the shot, and see Old Joe Tester holding the boom mic so that Mr. Peck may do his work- careful not to mess up the shot by being seen on-screen.

This is a dangerous conceptualization.  Testing must be thought of as part-and-parcel of the development activity.  We must fight against the temptations to think of an 'integration testing period' or an 'acceptance testing period'.

Here is a list of testing types that I think possibly could be decoupled from the activity of coding, but they are the exception, not the rule.

1. Load
2. Security
3. E2E
4. User Acceptance

I know that this is a generally non-controversial position to take, but I am alarmed at how frequently people around me take the 'test as support' view.

What are your thoughts?

Agile: DONE-DONE (done... done... DONE)

An insightful article regarding some of the many temptations we face in Agile development.

Getting to "Done" in Agile Development