Today’s featured promo on MacUpdate offers ShowMacster for US$9.95 (38% off, retail $19). “ShowMacster is an extension to Apple’s iChat which enables you to stream pictures, QuickTime movies and live screen captures during a video conference. By adding a drawer to the video chat window, it is seamlessly integrated into iChat. You can even import a collection of your favorite pictures, icons or movies to show them instantly. By pressing a button or keyboard shortcut ShowMacster will switch from the current iSight video stream to the assigned media.” ShowMacster requires Mac OS X 10.3.9 or later.