Joyeux anniversaire!
cumpleanos feliz!
gratulerer med dagen!
Tsenund shnorhavor!

shuvo jonmodin! (got that one off the roomie)
bil hoozho bi'dizhchi-neeji' 'aneilkaah!
Felichan Naskightagon!
Hyvaa syntymapaivaa!

Janma Divas Mubarak!
La Multi Ani!
Alles Gute zum Geburtstag!
Droonkher Tashi Delek!
Imini emandi kuwe!

Penblwydd Hapus i Chi!

and finally, my favourite:

Quchjaj qoSlIj! (heh. Klingon)

Happy birthday coffeeandink All the best for a splendid year.