I can see Task Manager in apps - all apps but it doesnt show in the actual app menu.
On going into it I cant see an option to install it, so I can see it but not use it!
Any S3 owners know a way?

Press and hold the Home button for Task Manager, and double tap for SVoice.

Thanks greenman so much to learn!

That's where the fun is.
Enjoy the journey. :)

Why isn't task manager shown in apps. I used to have it on my home page for instant access.

You do have instant access from home page, just press and hold the home button.

you can download the actual app/widget from samsung apps,more services.

You've got the headers hidden. Double click in the white border to the left of the thin line that outlines the data. You'll get your headers and menu back.