Oh yeah. You can tell the hard core gamers by the dice they have.
As the tools of the trade of roleplaying, dice assume a mystical, hallowed position in the minds of all true gamers, somewhat similar to the symbolism of the square and compasses of the Freemasons. If ever gamers formed a secretive globe-spanning society bent on infiltrating the halls of power and subtly influencing the course of world events*, you just know what their symbol would be.
* Fortunately for everyone else, gamers could never be this organised.
Qui-Gon: ... Okay, here's the plan. Obi-Wan, go stomp all over the Queen's clothes so we can pass them off as dirty laundry.
R2-D2: Guys, just brainstorming here, but how about I go out and fix the ship?
GM: That's incredibly dangerous... Besides, other droids are already on that.
R2-D2: I'm totally hardcore. Bring it on.
GM: The droid working next to you gets hit and blown into space.
R2-D2: Don't hold back, man.
GM: The droid working on the other side of you gets hit and blown into space.
R2-D2: No problem. I have Mechanic at max. I roll 01101.
R2-D2: Custom dice.
GM: Are they really labelled in binary? Let me see.
R2-D2: Of course. I got this set especially for playing robot characters.
GM: Are they chrome??