Here are some randomly selected joke topics
Computers
Unix - Reach out and grep someone.
Radio
Knock, knock.
Who's there?
Alison.
Alison who?
Alison to the radio every morning.
Cannibals
What do the guests do at a cannibal wedding?
They toast the bride and groom.
Doctors
Doctor, Doctor, I keep thinking that I'm a bridge.
Now then, what's come over you?
Two cars and a truck.
Idiot
Did you hear about the idiot who buried his car battery when the auto mechanic told him that it was dead?
Tourists
What is green, has two arms, two legs and a trunk?
A seasick tourist.
A Good Idea
I've got a good idea.
It must be beginner's luck.
A Born Loser
A born loser: Somebody who calls the telephone number that's scrawled in lipstick on the phone booth wall -- and his wife answers.
Blondes
Q: Do you know why the blonde got fired from the M&M factory?
A: For throwing out the W's.