Dave,
For your next video figure out how to mod a Rigol DS1104B to the non existent E model. Put more acquisition memory in it so it would be a 4 channel version of the DS1102E.
How about a mod for the DS1000 series that turns the rear BNC connector to a trigger out signal? That way you can use the scope to trigger an external device like a logic analyzer for example. Much more useful than the mask feature.
Scopeman