Ooooh Steve, you miserable old curmudgeon you! We don't go in for elaborate gifts or expensive Valentine dinners in posh restaurants (I agree it gets far too commercialised), but we always get each other a pretty card and write loving words inside (in French of course - good way to keep my language skills sharp)
At school we used to send/receive mysterious Valentine's cards to those we rather fancied! I hated Jean Springett, the most attractive lass in the class. She always got a pile of cards from her secret admirers. Maddening!
I second keberoxu's good wishes.
Happy Valentine's Day everyone, whenever and however you celebrate it.