IDEs that allow you block comment and uncomment seconds with a keystroke are awesome. Only problem is many IDEs have different keyboard combinations for this, and many times you may be working in a simple text editor for quick code. I often disable chunks of code and never liked the amount of typing I would have to do. I developed a commenting style that works on any language that uses "//" for line comments and "/**/" for block comments.
The Basic Block
This will toggle a single block of code by adding 1 "/" to the first line