That was a great video! Totally agree re: Qubes, it's a great alternate universe version of the Qbert series and it is possible to make it to the bottom of the bonus section.
It seems like the faster you play through the bonus, the longer you get in time; if that makes sense. I also believe you can stop time and experience "power ups" of sorts by jumping on different characters.
7-Eleven Q*bert and Mello Yello Q*bert are different beyond just the title screen in that they have an intermission screen after the second level. 7-Eleven was undiscovered until a late night wiring mishap (by yours truly) and Mello Yello has it's own back-story on RGVAC.
You can shoot in TYLZ using the Player 1 button, and if you didn't know that, then the game probably didn't make much sense
http://revengeofthenerdsv.blogspot.com/