It&s a classic, straight-forward topic on this week&s TrekRanks – the "Top 5 Coolest Looking Aliens" in Star Trek. From Andorians to Zalkonians and from CGI creatures to forehead prosthetics, everything is in play on this wide-ranging topic that spans a huge canvas of more than 55 years. Our expert panel of host Jim Moorhouse and guests Brooke Horton and Clive Burrell end up with a wide array of choices covering almost every incarnation of Trek. This one is cool.

Episode Rundown:

- Prime Directive: We skip our Level One Diagnostic this week to jump straight into a break down of how everyone made their final picks.

- The Order of Things: Everyone reveals their picks with the usual "Five words and a hashtag" summary, along with one episode that helps frame their choice.

-- Secondary Systems: Our guests all rattle off a few additional selections for the picks that just missed our lists, including some picks hot off the press from the newest era of Trek!

- Regeneration Cycle: Everyone recaps their picks and we discuss one of the best statistical anomalies to ever come out of an episode of TrekRanks.

- Temporal Distortion: We flashback to Episode 131 of TrekRanks and play a great voicemail we received for our show on the Top 5 One-Off Guest Stars.

If you have your own picks you would like to relay to us, please hail us at 609-512-LLAP (5527) and record your own personal TrekRanks log to let us know your Top 5 Coolest Looking Aliens. (Or you can record it yourself and just DM us @TrekRanks on Twitter.) Your comments could be used in a Temporal Distortion on an upcoming episode (and might get you a chance to be a guest on a future episode, too).

And don&t forget to check out TrekRanks.com for our entire back catalog of episodes and a detailed rundown on every episode of Star Trek ever.