Free Reflection Plug-in for After Effects
Feb0
VC Reflect is a free reflection generator plug-in from Video Copilot. It comes with a tutorial on how to use it.
3D Tunnel Fly-Through
Jan0

This tutorial will teach you how to create a sci-fi tunnel fly through in After Effects using only the standard plug-ins.
Tutorial Link
Puppet Tool Tutorial
Jan0
A nice tutorial showing how to make a worm travel across the floor by animating it using the Puppet tool in After Effects. You can downlaod a zip file containing the project and elements used in it.
Sci-Fi Tunnel Motion Graphics Tutorial
Jan0
Learn a quick technique for creating cool futuristic sci-fi space warp tunnels in After Effects using native AE plugins like CC Cylinder, CC Vector Blur and Fractal Noise.
Slow Motion Rain Drops in After Effects
Dec0
This motion graphics tutorial by Alex Verlan will teach you how to create a dramatic scene with slow motion rain drops falling from the sky. This tutorial, unlike most on here, requires 3rd party plugins particular, Shine and Form from Trapcode.
Animated Swirls in After Effects
Dec0
Animate a write-on effect useful for everything from text to decorative flourishes by following this after effects tutorial.
Camera Travels Underground Effect
Dec0
This excellent motion graphics tutorial will show you how to create those very exciting shots where the camera travels underground without cutting, traveling through a cross-section and ending up in an underground parking lot. 40 minutes long but well worth it.