A. Five!...Six!...Seven!...Eight!
About seven. One to change the bulb, six to sing the song.
Fish. I got this from bash.org a long time ago, but I can't find the original post, so have this
It takes two. One to change the bulb and the other to kick the switch.
Find out next time, on Dragon Ball Z!
A. He uses "windows".
A. With copper wire and strong electric current. (read it in a shower thoughts thread)
A. A dentist lets you sit down while he hurts you.