I like Elves and Halflings.
I like Elves due to their elegance (at least, in my mind’s eye). I like the racial perks they have in the PHB, although the additional info available in the Faerun Campaign Setting really rounds them out. I prefer Drow, or Half-Drow, but I easily play Moon Elves just fine.
I like Halflings for the size bonuses. The Halfing derivative I like most is the regular Tallfellow.
What’s your favorite D&D race to play?