Screen Recorder
I've used Snaps Pro X to take screen videos before (it's not free though). There's another one called Screenium but I haven't tested it.
One thing though, you can only record the screen when it's in windowed mode (Cmd-Enter).
Manga @ Triumph
"Meanwhile In The Halls Of Titan"...Titan Network Working To Save City Of Heroes
Save Paragon City! Efforts Coordination
Screenflow is my choice. It's very efficient; lets me run Ultra settings and record with no framerate drop. The link in my sig (Dark Armor is a Complete Waste as a Tanking Set) is a demonstration of Screenflow's power.
My guides:Dark Melee/Dark Armor/Soul Mastery, Illusion Control/Kinetics/Primal Forces Mastery, Electric Armor
"Dark Armor is a complete waste as a tanking set."

You know, Quicktime has its own screen recording option. It is under file > new screen recording.
Can't say much about the quality, though.
EDIT: well, here's the video of me making the post. Judge quality.
TPN trial guide video / MoM trial guide video / DD trial guide video / BAF trial guide video
/ Lambda trial guide video / Keyes trial guide video / Magisterium trial guide video / Underground trial guide
Does anyone know of a good screen recording software that can be used on a MAC? i been searching for 3 days now and nothing has come up. Gets really frustrating when a MAC wont let you do these kind of things