Howcast - Learn the history of the Melbourne Shuffle from choreographer Matt Steffanina in this Howcast dance video.

Howcast - Learn some attacking header techniques from soccer coach Deejae Johnson in this Howcast video.

Howcast - Learn how to do a lunge punch from karate instructor Richard Amos in this Howcast video.

Howcast - Learn about left arm position from musician Julie Artzt Becker in this Howcast video.

Howcast - Learn how to recognize and treat a concussion in this first aid video from Howcast with Nurse Mary.

Howcast - Learn how to adjust too-tight brakes from Silk Road Cycles' Brendon Nicholas in this Howcast bicycle repair and maintenance video, part two of two.

Howcast - Learn how to kiss with glasses from kissing expert Shallon Lester in this Howcast video.

Howcast - Learn how to do a cut smash shot from NYC Badminton's Chris Awong in this Howcast video. Thumbnail: badminton simple féminins dames by alainalele/Flickr

Howcast - Learn how to do the smash shot from New York City Badminton's Chris Awong in this Howcast video.

Howcast - Learn how to do the jump smash shot from New York City Badminton's Chris Awong in this Howcast video.

Howcast - Learn how to enlarge breasts in Photoshop from certified trainer Scott Strong of The Training Farm in NYC in this Howcast Photoshop tutorial

Howcast - Learn how to whiten teeth from certified trainer Scott Strong of The Training Farm in NYC in this Howcast Photoshop tutorial, part one of two.

Howcast - Learn how to do a calf crush from reverse mount leg lock in this Howcast video about lower body submission techniques for jiu jitsu, judo, and mma.

Howcast - If you're wondering if you're strong and fast enough to break a board, you might be surprised.

Howcast - Hitting a slow-pitched, high-arcing softball harder and farther takes hand-eye coordination, patience, and rhythm. Add power to your swing and hit farther home runs than you ever have before.

Howcast - Learn how to make a kazoo for a science project with the instructions in this Howcast video.

Howcast - Learn how to use an iphone as a weapon in this self-defense video from Howcast.

Howcast - Learn how to attack an assailant's knee in this self-defense video from Howcast.

Howcast - Learn how to do pop and lock neck moves in this street dance video from Howcast.

Howcast - Learn how to do the hip-hop dance move called the robot, aka botting, in this street dance video from Howcast.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a kick serve in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a flat serve in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a backhand volley in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to volley in this Howcast video.