Cullman, Alabama EF4 - 04/27/2011
Path Length: 50 miles
Fatalities: 6
Injuries: ~148
This was an absolute freakshow of a tornado. Subvortices danced in every direction vertically and horizontally. It started extremely thin, with a razor sharp damage gradient. These before and after photos from early in the path are a clear indication of the tight wind fields it had. Notice how two homes were completely wiped away without hardy a trace.

Just before the densely populated area of Southwest Cullman the tornado lifted, but the above ground rotation still looked ominous and foreboding.
Every time subvortices stretched and touched the ground they'd rip off roofs and tear up trees. The beginning of this video shows one such instance
At one point it hit a radio tower with a NOAA Weather Radio Transmitter on the bottom. It ripped apart and mangled the top portion of the tower, but the NOAA transmitter was left undamaged and still transmitting (just with a range of about 30 feet due to having no antenna).
The moment it hit the tower was recorded in this video from 0:27-0:36
It hovered above the ground scraping branches off trees and roofs off houses until it hit a powerline above 5th street SE that cut out power to ABC's skycam and killed James Spann's live feed. At this moment the primary subvortex roared into a pillar of churning destruction. Its color darkened and started hurling debris into the sky at incredible speed.
This transformation can be seen at 2:30 in this video
during this part of the tornado's life it only lingered over any given location for 1 to 2.5 seconds. it spent 5 seconds in a packed city block and demolished 10 out of 15 of the businesses there. "The entire second story of the exceptionally thick, brick-built Cotton States Insurance vanished, with the
first floor a broken shell."

"The building exploded and it was over just as fast as it hit. I was under the building-you know with bricks, cinderblocks, everything."
-Kitty Crawford, Busy Bee Cafe
The tornado dashed through an intersection, carrying with it four large and one smaller Ryder rental box trucks. One of the bigger 7 ton vehicles was stripped of its cargo and launched 60 yards. Another, was sent flying into the old Little Bit of Everything store, and was pushed so deeply into the building it couldn't be seen from the outside.
Probably shouldn't be sharing these ones, but they're too crazy not to. Please don't share outside of this site.
Here's the moment on video (2:04 - 2:12)
This was the story for the first half of the tornado's life. It lifted and caused minimal damage, then crashed down with ferocious intensity. Finally, the condensation funnel fully reached the ground and it became a .85 mile wedge that obliterated everything it touched.
Here's a before and after from county road 1635

And another home from CR 1593
continued...