This plugin can be used for block commenting and uncommenting code in C/C++ source, PHP, JavaScript, or any other language that utilizes C-style comments.
If used on uncommented code the selected text will be returned with enclosed in C-style (slash/star) quotes. Executed again on selected text with C-style quotes at the beginning and end of the selection, the text will be returned without the comments.
The most useful method for using this plug-in is to assign it a keyboard shortcut (I use Ctl-B) which when pressed will comment or uncomment the selected text.