We have highlighted some other on line video converters before - but here is one more!
Bender Converter - http://benderconverter.com
This site will convert any online video from the following sources: youtube.com, dailymotion.com, megavideo.com, vimeo.com, twitvid.com, veoh.com, video.google.com, blip.tv, break.com, kontraband.com, facebook.com, livevideo.com (liveshows not supported), liveleak.com, stagevu.com.
Output files can be anything from .mp3 to .avi, .mov, .mp4 or a whole host of choices.
The nice feature of this site is that the conversion happens right there on the website. Once the conversion is finished - a download button appears to allow you to save the file immediately to your computer. No email address or registration required. Also, unlike some other sites, there is no mention of a daily limit for downloads (some of the other sites limit you to 100MB per day/per email)
Check it out and start saving some of those videos for off-line viewing. Have you tried this? Do you have another resource? Leave a comment.