Effects A-Z: The Blend Effect is new 3-minute tip on Motionworks. There’s more on this filter for animating blends in AE Help.
It’s nice to see the series continue; previous tutorials in the series are listed on AE Portal.
Chris & Trish Meyer had a similar series behind the wall at Lynda.com, except it ran though filters by Effect category (as in the Effect Menu). Chad Perkins also had a similar treatment in his Lynda.com 2008 series After Effects CS3 Effects. By the way, Crish Design noted that the Blend plug-in is especially useful for “crossfading between two layers with unusual alphas without having an opacity dip in the middle of the crossfade.”