From the "Wasn't Expecting to See That Today" Department, it's Doris Roberts, aka Everybody Loves Raymond's mom, busting out a shoryuken.
I don't mean "an uppercut"--I mean a SHORYUKEN. It's from the forthcoming, sure-to-be-best-picture nominee Aliens in the Attic and the action starts around 1:25.
Thanks to Nytetrayn for pointing this out

Yeah, I saw this a few weeks back before Land of the Lost, and I actually did shout out "SHORYUKEN!" when it happened. People laughed, but I'm not sure if it was with me, at me, or at the trailer...
Cyberlink420...actually, I kind of doubt the last one since the movie looks like it's going to suck.
03:08 PM CST