The best thing about Iridiums are Iridium Flares. http://www.heavens-above.com/IridiumFlares.aspx Sign up there. Put in your location. The next time you are at a party and have learned how to spot them, have your phone ring a minute before it is to show. Have a conversation with the Aliens or Musk, whomever. When you get off the phone tell your friends that that was the aliens and they are going to show up "Right there in one minute!" Your friends will believe that you are in touch with extraterrestials!
Who is psyched for tomorrow's Falcon Heavy Launch? Besides the attempt to land three 1st stage boosters, we also have SpaceX launching Elon Musk's Cherry Red Roadster into a solar orbit that approaches Mars distance from the Sun.
There is also a chance of explosive fireballs raining down on the Atlantic...