Cucciolo aka the Little Guy is the legend of the trample world. For two decades he had a site at cucciolopage.com and produced many trample videos. About 650 full-length (50-90 minutes) videos have been produced and a vast amount of shorter clips.
Among the more interesting types of short clips are casting videos, the first time trampling experiences for his models. Later some other companies started adding casting videos and first-time encounters, but Cucciolo was, I think, the first one who had done it.
The first videos were still produced on VHS tapes, then came DVDs and when the technology became available they went fully digital selling downloadable files.