Cloudscapes in Trapcode Form by Dan Sollis

An experiment using Trapcode Form to generate organic effects - in this case, a cloudbank. 

The After Effects project is available to download from the Digital Distortion website. Optical Flares was used for the sun flare effect - though I've also put an optional AE lenseflare in there (disabled by default) for those who don't have that plugin. You should get it though - it's awesome!

Project is for AE CS3 and above.  The soundtrack is "Sarcophagus" by Conelrad

Dynamic Shadows with Trapcode Particular by Andrew Kramer

Andrew Kramer has a technique for generating shadows for Trapcode Particular.

Watch his awesome tutorial here.

Pyro Pack

The Pyro Pack was made in 2004 for Particular 1.0 / AE6 but will also work in v2 (after an automatic conversion). It contains a bunch of different pyro-related presets such as explosions and fireworks.

View reel (10MB quicktime) :: view docs :: download PyroPack (docs included)

Tutorial: Accurate Reflections in AE by Quba

Quba has made this tutorial on how to create accurate reflections in AE. It is surprisingly simple! And it works for the camera-aware Trapcode plugs such as Particular, Lux and 3D Stroke. Check it out here:
http://qubahq.com/2010/06/tutorial-100-accurate-reflections/

3D stereocam set-up in AE by Jochem Drost

Download AE project file

Watch test video here