Yes there is. You have to write an extension api, then call that api from the template using {vb:data} in the template. It's fairly involved but once you understand the process, it gets really simple. I'm in the process of getting all this info together in one place but work has kicked up and I don't have much time. Maybe in a week or two, I'll get the info posted. If you're trying to do something fairly simple and specific, shoot me a PM and I'll look at writing an example code for you this evening.
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