I like the Bishop. One time I had a bishop on the corner of the board. When my oppent's queen killed my rook I tried to find a way to keep my knight from being killed to. It took me around 8 minutes to see it, but when I did then my bishop wiped out the queen !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
In love with my piece...
I like pawns for their sturdiness and for how they're easily sacrificed. I also like the knights, just because how they move is more interesting than the rest of the peices.
Pff, tough choice, perhaps the weird knight or the powerfull bishop? On the other hand the rook is a frightening tool of war no chess player should go without. Should I pick the reliable pawn perhaps, or the mighty queen? Nah, I'm going to give my love to the king, in the end he is the commander of the entire army.

Honestly?
They all scare me to death.
And I go to pieces and I wanna hide
Go to pieces and I almost die...
--Del Shannon

This thread is far more interesting than I thought it'd be. (And as an aside, I'd like to visit Beast's Wales sometime, I think it'd make for an interesting vacation :)
Favorite piece... well I can't decide... least favorite piece: the Bishop. They just seem mean-spirited to me. And snobby. All slanty and stuck-on-one-color -- who needs them? Rooks are solid, broad shouldered, very by-the-book and no-nonsense. Knight's are sort of Friar Tuckish -- Fat, a bit drunk, but they'll clout you on the head with a mutton chop if you aren't looking. The Queen is kind of scary-hot, Angelina Jolie + the Alien. Pawns are grey faced peasants, tired, oppressed, miserable and ignornant. When a pawn promotes however, they go MC Hammer-style crazy and buy gold socks and pet ocelots and such. The King is one of those large boned dignified sort of men with sideburns and a big meaty handshake but 30 seconds into talking with him you think, "God! What a bore! He's not very bright, is he?"
Hmmm... now that I read what I wrote, it seems Knights are my favorite piece after all.

The Queen is kind of scary-hot, Angelina Jolie + the Alien.
Reminder: Angelina Jolie was the model and voice for Grendel's mother in the recent CG-animated film re-adaptation of the Norse epic Beowulf (of the same name). I've never seen a sexier monster on the big screen. She definitely was a powerful Queen of sorts (of demonized nixe).

I choose the king.
He can move one space at a time in ANY direction, a power only the queen can rival.
My board is a socialist utopian meritocracy; each piece judged not by the girth of its crown but by the content of its character. Attack and defence is a communal symbiosis; the player is the god of a contested universe. Talent at the board is the ability to wrest the utmost efficacy from the attributes of the pieces, thus a specific love for a piece is entirely dependant upon position.
Should circumstance grant me the pleasure, perhaps delivering a deadly mate with the humble pawn finds in me the most aesthetic joy.
ED.
Wasn't this from a scene in Monty Python and the Holy Grail? (Scene 3)
You know the bit, where the peasant, Dennis, is in the field cleaning up muck...