UPDATE: Well now, this seems to have gained a little attention, hasn't it? I honestly can't believe the response to this video so far. At last check, it was about to clock 2 million views after having been uploaded for less than 3 days, which is incredible.
NEW UPDATE: Aaaaand this just got featured by Ray William Johnson: https://www.youtube.com/watch?v=H5xhdntSlo8 . This could make things interesting ^^;
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Of course, I'm just the person who was lucky enough to record this video and have it go viral. After a brief search, I am pleased to report that the man who has been keeping you all well entertained with his flailing performance is none other than:
Dennis Pereira (actor) - http://www.facebook.com/TheReaver
There are also a couple of others responsible for the creation of the costume, who can be contacted at a Facebook Fan Page set up following this video going viral:
Zoe King (concept) & "Sushi Slammer" (design & construction) - http://www.facebook.com/WackyWavingInflatableArmFlailingTubemanCosplay
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Some of the places this video has popped up over the last few days include:
* NineMSN: http://news.ninemsn.com.au/national/2012/11/13/05/27/man-impersonates-inflata...
* BuzzFeed: http://www.buzzfeed.com/svoip/best-cosplay-of-all-time-4y59
* Reddit: http://ir.reddit.com/r/videos/comments/131h2r/best_cosplay_of_all_time/
* 9GAG: http://9gag.com/gag/5822997
* Trendolizer: http://www.trendolizer.com/2012/11/the-best-cosplay-of-all-time.html
* Nova: http://www.novafm.com.au/video/funniest-costume-ever-goes-viral
* Huffington Post: http://www.huffingtonpost.com/2012/11/13/the-best-cosplay-of-all-time-tube-ma...
And it's even in GIF form now: http://www.gifbay.com/gif/the_best_cosplay_of_all_time-11460/