Johnny Test (partially found pilot of animated series; 2004)
Johnny Test is an American-Canadian animated television series that revolves around the adventures of the title character, Johnny Test, an 11-year-old suburban boy who lives with his super-genius 13-year-old twin sisters, Susan and Mary, both of whom are scientists.
A pilot was produced in 2004, a full year before Kids' WB picked it up as a full series. Very little is known about the pilot itself. Johnny, Dukey (who was referred to as "Poochie" at the time), Mary, Susan and their parents, Hugh and Lila, all appeared in the pilot.  According to TV.com user Derek Lam, the pilot was animated in Flash, it contained an American cast (unlike the main series, which has a mainly Canadian cast), and that the pilot was redone as the first episode of the series. James Arnold Taylor was the only cast member to return from the Pilot to the show itself.
Only a screenshot and a promo for the pilot are available online, no other footage has been found.