Oh cool.
Thanks for posting Poodles!
Similar material is found on Victor's Groove Workshop DVD which I use.
The Groove Workshop DVD has a lot of great instructional material that would apply to guitar as well. I recommend it to any and all guitarists I know.
I mostly use a drum machine, but I'm thinking that the less-cluttered beat of a metronome might be very helpful too.
One very useful excercise that I've done is to set the metronome at a fairly low BPM, say 50 to 70, and play one note per beat, then two per beat, then three, then four, five, and back down to one. Seems to help.
Yeah Robert, I agree so much on the importance of timing work!