General physics web resources:

• Falstad site (the original for simulations and still the best for waves and electric fields
  
• PHET: A great site for physics simulations (A great site with all kinds of physics simulations, lots of fun!)
• The Physics Classroom Quite good conceptual explanations of mechanics and waves
• From Star Gazers to Starships A great site that has physics lessons, Q&A, and much more
• Fear of Physics Check it out .
• Hyperphysics An overview of physics, website is a bit dated, but some good stuff.
• Flash Animation for Physics
  

YouTube Physics spots

• Airplane hit by lightning, demonstrates the physics (and safety) of a Faraday cage.
• Road Runner Cartoons -which laws of physics are being violated
• UTube video on double slit experiment
• UTube video on extra dimensions using Carl Sagan's 'Flatland'
• Nano Song

Links by Topics

Waves:

• Wave Animator
• An EM wave (i.e. a light wave)
• Demonstration of Sound Waves in Air
• Waves in 2-D
• Interference Simulation
• Standing Waves
• Doppler Effect Animation
• Doppler Effect
• Wave and interference Simulations
• Sonic Boom
• Refraction
• Center of Mass
• Tuvan Throat singer
• Sonic boom made visible
  
  Light:
• ElectroMagnetic spectrum song
• Physics classroom tutorial on EM spectrum
• Feynman on EM Spectrum
• Crab Nebula at 4 wavelengths
• Flowers in UV
• Hubble Telescope picture gallery
• Animation of solar eclipse
• Animation with explanation of solar eclipse
• Radio Wave transmission simulation from PHET
• Light Transmission through our Atmosphere
  
• Human Eye Color response
  
• Visible light and Eye response (physics classroom)
• Simple Color Mixing Simulation
  
• Color Mixing with reflection transmission (really excellent)
  
• Mars Sunset
  
  Kinematics:
• Graphing Simulation
• Moving Man
• Projectile Motion Applet
• Projectile Motion Sim (PHET)
• Shoot a cannonball into orbit
• The Carousel
• Cannonball and Railcar
• Bowman
  
  Centripetal Force:
• Wall Riding in India
• Coriolis Effect
  
• Coriolis Effect as seen on Merry-go round in real life
• Coriolis and Centrifugal force vectors
• Foucault Pendulum: One in Paris, Animation
  
• Hurricane's and Coriolis
  
  Gravity:
• Death by black hole
  
  ElectroMagnetism:
• Electrostatics simulation
• Gauss Law simulations
  
  Circuits:
• Circuit Construction kit (DC)
• Circuit Construction kit (AC and DC)
• Ohm's Law in circuits and online practice quiz
• Microscopic view of Ohm's Law
• Resistor Color Code Calculator
  
  Quantum Mechanics:
• Hydrogen Atom
• Particle in a Potential Well (1-D)
• Double Slit experiment cartoon (very well done until the very end)