Stupendous Software today announced the release of two new iMovie plugin packs, containing a total of 45 effects, eight of which are available for free in the demo versions of the plugins. This release brings the total number of iMovie effects available from Stupendous Software to 186, including 32 free effects. The new plug-in packs include Scratch & Dirt (23 effects, 4 free) and SplitScreen & PiP (22 effects, 4 free). The iMovie effects are priced at US$25 per plug-in pack, and require iMovie 2.1.1.