I'd recommend checking out some of the stickies on the top of this thread cuz there's some good stuff up there.

Off the top of my head, here's some stuff you could use...

WTC:
-How could each floor of a sky scrapper collapse in less than second when there are several solid steel collums, and jet fuel CANNOT melt steel? And the hole is in the top, how would that make the entire building collapse?
-Firefighters and others heard expllosives go off (whatreallyhappened.com)
-BYU Proffessor detected thermate being used (article is new on this forum)

WTC 7:
Brand new solid steel building collapsed straight down from that little ass fire.

Pentagon:
-The pilot COULD NOT FLY A PLANE yet made advanced menuevers a 757 should not be able to make
-No plane wreckage

NORAD:
-NORAD is able to intercept stray planes anywhere in the US in less than 5 minutes (or so), yet on 9/11, over an hour nothing was intercepted
-Govt (led by Cheney) ran wargames which helped confus NORAD, or a stand down order was issued