A Youtube genre parodying music videos by singing literally what's on the screen rather than the lyrics over the original music.
I just watched the literal video version of Total Eclipse of the Heart on you tube. It was so funny I almost peed my pants.
When a person has so many gadgets on his/her belt (usually his) that they look like Batman. gadget can include Blackberry, pager, cell phone, tools, keys, flashlight ...
Bob has to carry a pager for work now . With his cell phone and Leartherman on his belt he totally looks like he has the Batman syndrome.