OK, cool!! All good :-).

The warmup exercise from Satriani is a good one too. More finger indepenence with some stretching your fingers out also.

I see the value in doing stuff like this, but honestly they bore me to death. Maybe I'm impatient, or want to make better use of my limited practice time, but I perfer working on songs. It probably would have been better for me to have discovered stuff like this 20 years ago.

I use exercises like this as a self check. If I have a problem, I'll find a song that has similar difficult fingering that's foriegn to me and work it through.

Though I should probably listen to guys like Satch and Petrucci...they sort of know what they are doing :-).