(Joseph Smith!)

Also available as a conveniently looping .swf file here

I don’t know the source of these files, or even if there may be more of them, but the 4 posted below were found here (there’s a bunch of quality stuff there, worth a look around if you’re bored). The .swf files themselves list a name MackanZoor, and are from 2007; the audio tracks listed below each video are also what’s reported in the .swf file. The videos don’t have a progress bar or anything, but each one is around 5 minutes long, and you can download them for yourself here. They may take a while to load, but you can click play and effectively stream them when they hit around 50-60%.

(NOTE: These are extremely NSFW)

Audio Track: DJ WyZz – The 7th Inning Stretch

Audio Track: Chef Boyardee – Barkley, Shut Up And Jam

Audio Track: Hideki Naganuma, Teruhiko Nakagawa – Right There, Ride On

Audio Track: IOSYS – ????????????? (track 11)

The original can be found here.
Since they auto-play (which kind of obnoxious unless you’re expecting it) and weren’t meant for direct embedding, some other classics from the same site:
Kenya (and also the spinoff Somalia), Magical Trevor, scampi (this one is good if you’ve never seen it), and annoying (be careful with this one)