Want to do a quick screen cast? Don’t want to install anything or maybe your somewhere where you can’t install? Only have at most 3mins? Screen Jelly is for your.  It is a Screen Cast option that does not make you install or download anything.  It captures your entire screen.  I do mean entire.  When I do screen cast with Jing (5min limit and have to download) I cut my tabs and window tool bar out.  The sound isn’t the best, although I am talking softly in the example below.  There are better screen casts creators out there, but this one is great for what it does and how it does it.  After you record, you can share it through many social network sites.  I also signed in with my twitter account.  Check it out!