Let's examine this hint more closely...
"2:44, etc" can either mean 2:44 onward, or scenes that are similar to that of 2:44 are part of the clue. I seriously doubt that they mean to "Think back" before 2:44 in the video, and I also have a few doubts with the latter option, as...what makes that particular scene so special from the others? In any case, we are now no longer limited to that one little dancing scene.
Think back...hum. It'd be easier if we knew what subject we should "think back" too, but this hint is still workable...
I've only been here since around the Pikachu hint, so I don't know the history of this thread very much, but, to the people who have, does that vid remind you of anything that happened here? I honestly don't know what possibly could actually relate to it, but I'm just fishing for answers...
And if it just means think back in general...I still can't think of anything.
The "Do the Mario" dance seems somewhat plausible...actually, Mario seems quite plausible as well. After watching more than that little dance scene, I saw the same guy(Mr. Wiggles) moving his hands as if he were holding a Wii wheel, and was reminded of Mario Kart. And they were driving a car too (along with the guy with the red hat...lol). But I don't see how that fits in with the "Think back" hint...unless it means "think back" to the 8-bit days of Mario. Then again, that can be said for every character. >_>
Waiting for infzy-esque post that will knock my Mario hat off.