I'll probably start with an elven rogue, or a tiefling rogue. Then the other one. Then I'll play a elven warlock, and a tiefling warlock (or the other way around). After I've played these combinations of my favourite two classes and favourite two races, I'll play an eladrin, first a rogue, then a warlock. After that, an elven ranger, a tiefling ranger, and an eladrin ranger.
When anybody complains I'm playing the same type of character over and over again, I'll create a dull-witted dwarven fighter, attack anything that moves, and get it killed in, let's say, the second encounter of its first adventuring day ^_^
(some might say I'm one of those "specialist" players... which, of course, isn't true at all)