I love playing characters who aren't defined by their class.
My first PFS character is a Han Solo type mercenary siege engineer who's gotten tired of the indifference of the evil empire he worked for and started working for the small guys instead.
He's Fighter 2/Rogue 1/Ranger 3/Shadowdancer 5
(Needed Fighter for knowledge engineering)
I also have a lvl 11 Gnomish cleric who unfortunately still hasn't managed much of a personality, but with a strength of 5 and heavy armor he literally almost drowned after stepping into a 4ft deep mud pit. I think his personality has mostly become making snarky comments about everybody else and generally finding himself superior, which I don't think is really that fun to play with.
I have a lot of characters (6) and frequently ask the table what they are playing before I decide which of my characters to play., I would be delighted to hear a bit of description rather than class, class doesn't actually tell me that much.