Do you have any tidbit of knowledge that might not be well known that you'd like to share with us?

For example, did you know that when you call a cell phone and get sent to voice mail you can interrupt the voice mail message and get sent straight to the Beeeep by pushing the star key? Only one catch….once in a while, maybe 1 out of 10, the person you’re calling is with a carrier who has their network set up so that pushing star sends you into their voice mail preferences. It asks for your code. In that case, pushing the # key does the trick. Of course, if you don’t know that in advance, you actually lose some time because you have to call back.