Quote - simple answer is :

set scene to frame one. Open the animation palette, go to the row for the can prop, highlight all cells in the row after frame 1, but before the frame where you really want the can to start to move, and hit "delete" on your keybord.
close animation palette.

Actually, no -- assuming he's parented the can to the hand (which he should, unless he wants to spend untold hours trying to match them up): even with the frames deleted, the can will still move all over the place as the hand moves. The visible/invisible idea is a good one, but the simplest approach really is to just do it as three separate clips and stitch them together. Certainly the cleanest, as it doesnt require any tweaking.

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