Best Way to Download High Quality Videos from Youtube

Hi,
Can you suggest best way to download HQ videos from youtube? I am using some stupid program and the quality is horrible.
Thx
Answer #1
Try keepvid:
http://keepvid.com/
Or the program TubeTilla:
http://www.freedownloads.be/downloaddetail/2287-TubeTilla-Free
Answer #2
IDM CAN HELP U
Answer #3
Never needed anything more then my Firefox and Flashgot.
Answer #4
https://addons.mozilla.org/en-US/firefox/addon/13990/