Template:CaptionedImage
Usage
{{CaptionedImage|file=FileName.jpg|title=A popup title|caption=A caption underneath|align=right or left or center or none|width=pixels}}
NOTE: You can set the height of an image by abusing the width parameter by putting an "x" before the value, like this:
{{CaptionedImage|file=FileName.jpg|title=A popup title|caption=A 200px high image underneath|align=right or left or center or none|width=x200}}