Isnt it pathetic how the only way for the common man to get into the media is through ultraviolence? On the other hand, we could all do a mass SDMB suicide at a designated time in front of our local City Halls (or other majorly public areas). 
Is this your mood development while thinking about that proposal?
Here are some possible headlines, if you can time it right:
Man saves Bill of Rights from burning building…
Woman flings self in front of bus to prevent the death of Dali Lama…
its just that most acts of kindness (that get national attention) take longer than 15 minutes to accomplish.
I ought to have my cold fusion generator ready as soon as the glue sets. Can we start the clock AFTER?
yes. I like to keep a up to date database of my moods using sdmb icons. 
:eek: 
;j :wally
these little smileys are also my only friends
Other than spectacularly destructive acts such as major arson, mass poisonings, killing sprees, etc?
Shooting model rockets at low-flying planes near the airport. – No, requires more than 15 minutes to buy the rockets, drive to the airport, launch & run.
How about surreptitiously taping a box cutter blade underneath the security scanner belt at the airport?
Releasing enough dye into a local waterway to stain the water for miles. Kool-aid should work. Yep. That would do it. I can get to Safeway, buy several dozen cases of cherry Kool-aid, and release it into the Snohomish, all within 15 minutes, traffic willing. It will take longer than 15 minutes to spread, though.
Would that count?
I could reveal the true location of Jimmy Hoffa, but then I probably wouldn’t …aw, never mind!
“You murdering murderers!”
Well, I could always strip naked and run onto campus (across the street) … sexually harrass a few people with the 14 minutes remaining, maybe splash around in a fountain or two. That might not really make national news, but it’d be all over the Southern California news, which is even better! 
Or, as someone else mentioned, I could hijack an OC bus, but who would want to? Bloody things don’t go anywhere useful as it is.
I know, I could hijack an OC bus naked! Hmm …
No, but i was on the local news for 5 seconds, accepting a lawsuit paper from the local head of the Democratic Party for one of the folks in my office. Some politcky (and I mean icky) manure-flingfest going on. And of course I was the only one there - at least I dressed up today.
Let’s see…15 minutes to make national news? I could do one of two things: The first would be to grab a rifle and go down the road to the post office (the only federal thing nearby), then shoot everybody.
The other would probably be bigger, but a little more difficult. I’d fill up the truck with as much gasoline as I could store in it (not being a chemist, I can’t make a better explosive than that), drive into the county court building, and (assuming I survive the crash), light up.
Viola! National news.
From where I am right now? Not a chance. Not even if you gave me an hour. Sigh.
Could I? Oh sure I could. Very easily.
I know people that would call a strike of cheese factory workers in Wisconsin, at the drop of my hat.
Tripler
I am truly a man with power.