I wish I was good enough to be able to say I'm influenced by Jaco. If you're interested in Jaco, find the "instructional" video he did with Jerry Jemmott "Modern Electric Bass." I heard him with Joni Mitchell first in 76 on Hejira. Since then I've listened to, and enjoyed, a big sample of everything he's ever done, but his work with Joni is what I still love best. Supportive, creative, bubbling and witty.