This is Dave Marks (davemarks). He has a few videos up on YouTube in which he gives lessons on both bass and even some guitar. The rest of his videos are of himself playing in different gigs. As you can see, the man is a full-blown professional bass player.
In this particular video he discusses a topic that has really divided bass players for a while now: "Should or should I not use a pick?" so, from now on, you can direct those who say playing bass with a pick is "uncool" or "unprofessional" here and see what a real pro thinks.
More Dave Marks lessons getting posted here in the near future.
You can also visit his website at www.davemarks.com