The magic bullet suite is simply great for correcting problematic footage. I use it every day for fixing up clips and correcting the color. Colorista is better than any of the Premiere or After effects built-in tools for color correction. The ability to control the chroma and luminosity of individual colors is simply astounding and opens up world of creative possibilities. Very often, footage will come back to us grainy because of under exposure. We used to have to reject it but now using denoiser- It's really easy to remove the noise and then color correct using colorista. Cosmo is also great for performing cosmetic changes in your videos. While you can achieve a similar effect in colorista using the keying options, it's still an easy way to touch up faces without getting too technical.

3D mesh-based simulation is the best in the industry, It gives the countless possibilities to make our work creatively. Fluid simulations are the easiest way to use.

I like the trapcode plugin, this has the particle simulated in after effects are a whole new level of motion graphics possibility