It was my bothers 20th birthday this week and one of our favorite books is Catch-22. So I tracked down 20 people in 20 different area codes - and had each person call him between 4:00 and 4:10 PM EST. They all said "TS Elliot" and then immediately hung up. Some of the people I called immediately understood the reference to the book, others didn't know what the hell I was talking about and it took some explaining. To those that took part: thanks for your help. I owe you one.
It turns out he was at the bank during that 10 minute period, which increased his aggravation level. I'd call the whole thing a huge success, but we'll just have to see what kind of payback prank I'm the victim of.