Current Glitches - Please Tell Me Them

[jkool666]

I am requesting all players who know of glitches to private message jkool666 (on the forums) the following:
-A description of the glitch
-Detailed steps to perform the glitch
-Reasons as to why this glitch gives the person using it an unfair advantage

You will recieve a minor reward (pipebombs, gasgrenades or money) if you are the first to report the glitch.