When people think of the classic D&D mage, wizard, or sorcerer, they think fireball (Sadly the poster'd mage looks more like he's about to cast burning hands. I am digging his snazzy goatee and red robes though). It's the iconic wizard spell for blaster mages followed closely by magic missile. Fire speaks to the soul, that deep down yearning and passion to destroy shit. It doesn't get more visceral than fire. Which is why you see so many fire themed prestige classes and people playing fire mages. It's pretty much its own cliche at this point.
This reminds me of a game I played in. I regret to inform all of you that I wasn't the one playing the fire mage. That game I played a rogue. A dashingly handsome halfling. That all aside our sorcerer/cleric of Kossuth( This just shows how iconic this really is. There's a god who's entire portfolio is devoted to burning shit to the ground) had a tendency to wax and wane if you will. My rogue dealt with the fire mages' moodiness by juggling flaming torches for him.
Let's hear about the pyromaniacs in your life, er game.
Art from GIS
LooneyDM bursts into flames.