Pan - Horizontal movement of the camera lens
http://www.youtube.com/watch?v=Ds9LTr_m0Y8

Tilt - Vertical movement of the camera lens
(I couldn't find anything for this, maybe someone else can)

Crane - When the whole camera is moved up or down
http://www.youtube.com/watch?v=Yg8MqjoFvy4

Dolly - When the whole camera is moved horizontally
http://www.youtube.com/watch?v=xTVLDuH9juI&feature=related

Zoom - Zoom lens moves in and out, the depth of field doesn't change
http://www.youtube.com/watch?v=ET-dSQka6_Y

Zolly - Pulling the camera back while zooming inward
http://www.youtube.com/watch?v=iv41W6iyyGs&NR=1

Handheld - Shooting while holding the camera (camera is not on a stable mount)
http://www.youtube.com/watch?v=G_NjfPj5IDg