I've seen a couple versions of this, but I like this one the best:

I Like That!

Definitely the geekiest version I have seen, lol.

Ok yes that's really funny...

[Blond Moment] What's it supposed to mean?[/Blond Moment]

CoEXiSt spelled using space vehicles from various galactic civilizations.

I thought the lower part of the "I" was a sonic screwdriver from Dr Who...at least it looks like it
Would make sense too..including Dr Who and not duplicating Star Wars

Very cool,
and here's the religious version:

In order: Islam, Peace, Male/Female, Judaism, Wiccan/Pagan/Ba'hai, Taosim/Confucianism, Christianity

Thanks, I got the C--XIST but didn't realise that the enterprise represented 2 letters.

Looking at it again....Is that some kind of ship flying out of the Enterprises shuttle bay?...If so it looks way to big to be a shuttle....hummmm

Awesome. I didn't get the "S"s origin, surprised they didn't use Stargate for the S.

Foolish infidels

@greyhaze: well they had already used the Stargate itself as the dot for the "I"...
I foundit interesting that that Star Trek, via Enterprise, got to represent two letters... and yes that duality threw me...

and...

@Solospirit: yeah it looks like a Federation shuttle - I didn't catch that little detail either. I reckon I need to stop reading the forums as I'm falling asleep at the end of a long day - lol.