I'm not sure if someone has posted this video before, but I stumbled across it and thought it was pretty good. He articulates himself well (much better than I ever could) and provided a nice thorough overview on isometrics.
I myself, am less concerned about strength and more interested in the potential hypertrophy benefits of longer duration isometrics, which he only briefly touches on in this video.
Nevertheless, as I said, it is a good video and I thought it might be helpful for the newer members and/or spark an interesting discussion between the older members who are well versed in isometric training.
https://www.youtube.com/watch?v=RwHbWUXz98I
Greg
Yes, I have performed a dynamic movement following an isometric exercise, which is the "isometric superset" that Bud Jeffries wrote about and that Michael mentioned above. I've mostly done it for biceps and triceps. It was good. You get a deep burn and a pretty decent pump. I also find that my arms tend to look fuller the following day. Of course, I find that is often the case whenever I do something different in my training.
I generally perform my isometrics as a separate workout. However, in my morning calisthenic routine, I often like to include an isometric exercise as part of a circuit for my upper body. I'll do a push-up variation, followed by a pull-up variation, followed by a 30 second isometric hold movement for the posterior delts/upper back. For whatever reason, this results in an incredible pump for the entire upper body (more so than if I picked a dynamic movement for the delts/upper back). I just feels great.
I guess in the end, I haven't found a bad way to train with isometrics. They may not do everything you want them to, but it's all good.