What can you catch but never throw?

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

I can write cow in 13 letters.

Can You?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with a capacity of 4 litres, 8 litres and 10 litres and you have a large tank of water. Now you have to measure 3 litres of water precisely using those buckets. How will you do it?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.