I love you and I love this game!!
but, a few very minor things needs to be changed:
•occassionally, menu options such as the "play again" option in-game don't register by just one touch and have to be touched different ways to select it
•as the above poster said, there needs to be a live running counter on how far the dog is going
•there needs to be different colors/intensity levels of the nitrogen balloons (as I believe they have in the original game)
•there needs to be (as you suggested) global scores with the top 1,000 scores AT LEAST. the highest I've gotten is 1,400 points so the 2k+ starting points are almost unachievable to most people I'm guessing
•there needs to be personal high scores as well just to keep track of your personal records
just my opinion
this is my new favorite app and I'd be willing to put all the money in my bank account on the fact that it will skyrocket to #1 in no time and be the next cheap little widget fame app that's just fun to play forever