How can I filter some iTunes items out to make a custom shelf?

I'd like to publish my iTunes library to the web, but I want to filter some items out (some personal home movies of my family, and some silly clips that are in iTunes, but I don't need on the web).

I can't seem to just drag from the iTunes Movies section to a shelf.

I can come up with a Smart Shelf that seems like it might work, but there isn't much iTunes info available to use as a filter (in fact, "Comments" seems to be the only tag that DL2 is reading that I can edit in iTunes -I suppose I could put "Exclude from DL" in that tag of each movie I want to exclude, but there's got to be a better way).

So, how can I make a shelf (which I can then publish to Mobile Me) of only certain iTunes movies?