Dilworth Billiards is probably the coolest pool club in Charlotte. It's a private club, so you need a membership to play there. And I mean a real membership - not a sign-in list on a piece of notebook paper (like most clubs have to skirt the weird NC alcohol rules). Luckily, my boyfriend is pretty into pool and went so far as to join the club.
They have classic, antique pool tables, which are also for sale.
The outdoor patio, complete with a beautiful fountain, is a great place to hang out on a nice day. You'll find a crowd of regulars at the bar there. It's definitely a smoky place, and your clothes will reek as a result. But everything else about the experience makes up for that.