Glad to be back here-I've been over on another thread trying to explain to a bunch of ethically-challenged 20-somethings why putting someone else's music on bittorrent is stealing. Pheww! Scary!

I've used Commreman's article reprint (thanks, BTW) as a jumping off point for some of my students this week. I have them taking 2 of the arpeggio possibilities and playing them through Ornithology, Stella by Starlight, and I'll Remember April. I've chosen 357R/57R3 as my example. I've told them that this is NOT a performance exercise and they should not worry about speed, etc. I call this sort of thing "chewing on the changes"-you're just getting a taste of them by rolling them around and seeing what they'll do.
One thing that strikes me as I read the article is that it puts a lot of the musical responsibility on the student in a good way. It's totally easy to spend your life reading exercises, learning other people's licks and solos, and generally dealing with information presented to you in a complete way. This forces you to go within and find the information yourself. That strikes me as more valuable somehow.
I find that a lot of my students (and sometimes me) are uncomfortable with the fine books of Chuck Sher (The Improviser's Bass Method and the bass soloing book he co-wrote with Mark Johnson
www.shermusic.com) because he will teach a concept and then tell you to go play in the big open field that is your bass neck and see what you can make of it-in short to improvise. It's a whole lot easier for me (and my students) to just deal with notes on a page, but this strikes me as extremely valuable.