He's got his own membership website called xxxamateurhour.com. It includes about 20 scenes (so far; supposedly a new one is released somthing like twice a month) featuring him topping a variety of typically smaller and younger guys than he.
There's one particulary hot scene. In it, Barrett's getting a massage. It begins with him on lying his stomach and wearing just a towel wrapped around his waist. Meanwhile, the camera scans his huge dick and balls sitting there calmly between his legs. As you might guess, he then rolls over to have his chest, etc. worked on. Of course, the camera then eventually returns to his his huge flaccid dick slowly but surely rising to the occasion beneath his towel. You can guess the rest. At a little less than in hour in length, it's one of those slow-burning scenes.
Apart for the occasionally embarrassing attempts at humour and/or intellectual discourse during the lead-in interview/conversation part, the sex and photography are pretty good. None of the scenes appear to be edited much; as a result they tend to be lengthy (not a bad thing).
There's one huge drawback. The videos cannot be copied or downloaded in any way, shape, or form. Personally, I want the option of saving a particularly hot scene for posterity. That said, you might want to invest in a program like CaptureWizPro that essentially "records" whatever activity is on your screen in real-time; it can make screencaps as well as videos. Of course, you can expect a poor quality picture this way.
If you're really into Barrett Long, I recommend the site.
I attached some pictures from the site.