At Part 3/9 Building a Tip Calculator Part 2, you should check a bit your text, it is missing some words and it has some mistakes in general, just thought I should inform you :)
is the name of the second badge a reference to "king nothing" by metallica? after seeing the first one called stargazer, i thought it was a metal themed game :P
for lvl 34 in inferno, use the first cross, turned it one time left (like an X) and then balance it in the big circle. Then use the sphere and balance it on the cross. After that, use the second cross and do as with the first and balance it on the sphere( again like an X) Then balance the long thing and you are done...
MRdocs, it is impossible to have a combo above 758, in junkie, in geek and hard mode. Also some more harder songs would be great, since many, i guess, are pretty bored with the existing ones, after so many times playing them...
 "The Programmer RPG"){kind=icon}
 "Utopian Mining"){kind=icon}
 "Chuck the Sheep"){kind=icon}
 "Wish Upon a Star"){kind=icon}
 "Jacob and the Gyrocopter"){kind=icon}
 "Flight"){kind=icon}
 "Ninja Hamsters vs Robots"){kind=icon}
 "Penguin Massacre"){kind=icon}
 "Passwords 2"){kind=icon}
 "Ocean Defender 2"){kind=icon}
 "Airport Mania: First Flight"){kind=icon}
 "Learn to Fly"){kind=icon}
 "Pirate Defense"){kind=icon}
 "Guitar Geek"){kind=icon}
 "Perfect Balance"){kind=icon}
 "Lucky Boot"){kind=icon}
Thanks! I think I fixed it.