Beautiful language though, based on Finnish I think . . .

Quenya shares some characteristics with Finnish; Sindarin is more like Welsh.

Only thing I can rattle off the top of my head (besides common stuff like "Ai! Laurie lantar lassi surinen...") is Mana nan unyarima na; mai tulle' ni Laisilmenorello ("what I am is unknown, but I come from the green-and-starlight-shining lands") which took me quite some time to learn to construct, what with the noun inflections in Quenya that don't really appear in English and all.

digitalsidhe is the person I know most into this kind of stuff; he even used to do Tengwar calligraphy by commission.