My favorites are: People who call upset because Netscape is not working and they can't get their e-mail. Only to discover that they didn't realize they had to be connected to the internet as well. These are the "came from AOL" people who think Netscape is the Internet.
Second is people that forget to take the tape off the ink jet cartridges and can't figure out why the printer is spitting out blank pages.
Finally, people that call because their computer is locked up, not working correctly or otherwise having problems. The first thing I ask everytime is did you restart the computer? The answer is usually; "No I didn't, should I? OK if you insist but I don't see how that will help. . . . . "