A bit late to the party but here's mine...
The first is a phrase that I've long held as my life's ambition and motto, and at the time I was considering getting a tattoo kept on popping up in various places and ways. "Je ne regrette rien" (from the Edith Piaf song) meaning 'I regret nothing', tattoo'd on my chest.
My second is a design that I've always liked and is an almost tribal (in a way) version of a yin-yang symbol. The version I have comes from the game Fable 2 and I've got it in black and white on my upper arm.
My third is on my shoulder and is a tribute to my favourite author (Edgar Allan Poe) and is the word 'Nevermore' (from the poem The Raven) where the letters make up the shape of a raven. This is again a kind of affirmation for me - and it looks totally wicked too!
I'm itching to get my fourth one done, but I'm taking my time in getting the right design together - I'm very much an ink junkie - there's something almost mystical about feeling that fleeting pain leave something permanent on you