Number 3 !!!
I bet you thought I'd forgotten about this list !
OK here goes...
Find a random name in the phone book and call them up. Tell them they've won a prize if they can name a few easy questions! Then make your questions range from stupidly easy (Such as, "what letter in the alphabet starts words such as "X-ray") and then make the questions suddenly harder ("What South American nation has the highest wealth-inequity ratio in the world, and what can forces such as the United Nations, as well as corporate western society do about these atrocities?").
It's fun. I've done it a few times before. The best part is when they're thinking, suddenly tell them you need to go to the toilet, and they'll have to hurry up.